Assistants help the producer and the (5) _______.

Can music exist without (1) _______? Some philosophers argue that music should be defined as a kind of “mental (2) _______” and that the physical aspects of sound are simply by-products of this image. If you (3) _______ you can have a musical experience by imagining the sound of a piece of music, then you think (4) _______ can exist without sound. But most musical experiences involve producing or (5) _______ to physical characteristics of sound such as pitch and timbre (quality comparable to texture or color in sight).

In the past, students were limited to their school’s (3)______ of books. In many cases, they got to the school library and found out that someone had already taken the books they needed.

All qualifications are awarded by national agencies accredited by the Qualification and Curriculum Authority (QCA), (3)____ the quality of the qualifications you will gain is guaranteed.

They talk about the bus and (2) _______about the weather.

Most of them feel cold. Some have to drink coffee to stay warm. Traveling by buses (3) _______pollution, but people often would rather drive their cars. Many people are not used to the bus schedules, and they do not like to wait.

Ever since it was first possible to make a real robot, people have been hoping for the invention of a machine that would do all the necessary jobs around the house. If boring and repetitive factory work could be (1)_____ by robots, why not boring and repetitive household chores too? For a long time the only people who really gave the problem their attention were amateur inventors And they came up against a major difficulty. That is, housework is actually very complex It has never been one job it has always been many. A factor robot (2)_____ one task endlessly until it is reprogrammed to do something else. It doesn’t run the whole factory. A housework robot on the other hand, has to do several different (3)_____ of cleaning and carrying jobs and also has to cope (4)______ all the different shapes and positions of rooms, furniture, ornaments, cats and dogs. (5)______ , there have been some developments recently. Sensors are available to help the robot locate objects and avoid obstacles. We have the technology to produce the hardware. All that is missing the softwarethe programs that will operate the machine.

The question is whether foreign travel brings more advantages or disadvantages. An obvious positive point is that going abroad sometimes helps people to expand their knowledge of the world. If they are (3)_____ minded, they can learn about new cultures and hopefully gain a more accurate understanding about their way of life. In addition, there is the economic benefit of tourism to countries which have few other resources. It can provide an income to many people within the industry.

Having said that, some people simply go to a foreign resort (4)______ by high walls and therefore learn little about their holiday (5)_______ .

Many species of animals are threatened, and could easily become (2)________ if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies.

Traveling by buses (3) _______ pollution, but people often would rather drive their cars. Many people are not used to the bus schedules, and they do not like to wait.