Choose the letter A, B, C or D to complete the sentence: How old … Nhu?

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Mobile phones emit microwave radio emissions. Investigators are questioning whether exposure to these radio waves might (39) _____ to brain cancer. So far, the figures are not final. The precise evidence does not enable us to say in certain that mobile phones are definitely safe. On the other hand, recent research has not yet (40) _____ clear adverse effect associated with the prolonged use of mobile phones. Many studies are now going (41) _____ in numerous countries. Some of the results are contradictory but the others have shown an association between mobile phone use and cancer. However, these studies are preliminary and the issue need further, long – term investigation. (42) _____ the scientific data is more definite, it is advisable for people to try not to use mobile phone for long periods of time. Don’t think that hands free phones are any safer either. At the moment, research is in fact showing the opposite and they may be just as hazardous. It is also thought that young people (43) _____ bodies are still growing may be at particular risk

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The regional supervisor is putting together team-based ------- for new trainees for each of the main offices

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Please turn the water ____________ when you're done brushing your teeth

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Since every penny of the grant ____ spent on equipment, we started looking for volunteers to do the cleaning

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He bought me dinner to make _____________ being so late the day before

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Everyone wants to reduce pollution. But the pollution (30) _____ is as complicated as it is serious. It is complicated because much pollution is caused by things that benefit people. (31) _____, exhaust from automobiles causes a large percentage of air pollution. But the automobile provides transportation for millions of people. Factories discharge much of the material that pollutes the air and water but factories give (32) _____ to a large number of people. Thus, to end or greatly reduce pollution immediately, people would have to (33) _____ using many things that benefit them. Most of the people do not want to do that, of course. But pollution can be gradually reduced in several ways. Scientists and engineers can work to find ways to lessen the amount of pollution that such things as automobiles and factories cause. Governments can pass and enforce laws (34) _____ require businesses and traffic to stop, or to cut down on certain polluting activities

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Don't worry, problems like this sometimes turn __________ with new heaters

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She spent money as if she______plenty of it

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Many of those old buildings will soon be pulled ____________

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The food here are ……………

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If you had seen the film, you ...................... it

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When you develop a throat infection or catch a ______________ the glands in the neck swell up

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Energy-saving bulbs should be used ____ electricity

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I'm sorry for all the interruptions—please, carry ___________ with your story

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A council has been asked to _______________ permission for the development in return for money for recreational facilities

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He must have been hungry; he _______ that burger in record time and ordered another

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It is important that he _____ a gallon of water with him if he wants to hike to the bottom of the Grand Canyon

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I need some time to mull __________ the options before I pick one

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___________ more help, I would call my neighbor

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I ......... all shy whenever I see her