Ecology is the study of our ................ environment.

500 years ago, the average human .................. was about 40 years.

More than 120 country offices carry out UNICEF's ____ through a unique program of cooperation developed with host governments.

We need ___________ to help the disaster-stricken area.

If you don’t study harder, you will ____the risk of failing the exam.

Choose the correct answer among A, B, C or D that best completes each sentence:  He asked her……. , but she said she already had a boyfriend.

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions

Finished her household chores, Mary decided to do some shopping.

The children had to ______ in the principal's office after they took part in a fight.

I am interested in ............. for the position of chief financial officer which was advertised in yesterday’s Daily Post.

Mark the letter A, B, C, D on your answer sheet to indicate the correct answer to each of the following questions. 

Passengers are asked to store any carry-on luggage  _________  in the overhead bins and fasten their seat belts prior to takeoff.

We received a call from the teacher ............ charge of the course.

If Mr. David ............  at the meeting, he would make a speech.

Choose the best answer:

WHO _________ for World Health Organization.

The price of fruit has increased recently,  ...........  the price of vegetables has gone down.

 The earthquake caused terrible ……. 

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions

 She is among the few who wants to quit smoking instead of cutting down.

Don't eat those vegetables. They're ………... 

We were late because we had some car problems. By the time we  ..................  to the station, Susan ................. for us for more than two hours.

 Every boy and girl in this room … the answer. 

 It was such a _________ story everybody ended up crying. 

................. her supervisor’s approval, she shouldn’t begin the project.