Complete the sentences with must , can't or might/could and the verb. 1. he (leave) the country. he hasn't got a passport. 2. our dog didn't come home last night . i'm worried a car (run) him over. 3. you (finish) that book! you only bought it yesterday. 4. she (be) really hungry . did you see how much she are ? 5. i think i (see) this film before but i can't remember.

1. can't leave
2. might run
3. can't finish
4. не знаю, извини
5. might see

1. He can't leave the country. He hasn't got a passport. 2. Our dog didn't come home last night . I'm worried a car might run him over. 3. You can't finish that book! You only bought it yesterday. 4. She must be really hungry . Did you see how much she are ? 5. I think I could see this film before but I can't remember.

Where are the robots?
Science fiction writers wrote about different wonders and robots. But robots are not a reality.  Where are our robots which help us to do the ironing, cook dinner, walk the dog, clean the house and so on? Perhaps it is much more difficult in practice than in theory to build such a robot.   Our scientists don't have the knowledge to give a robot intelligence or the power of reasoning. Perhaps they may never work it out. Researchers say that the best way to overcome this problem is to study the human brain and try create an artificial brain.   Nevertheless, scientists have already overcome other problems such as mobility. Also, robots can now look more human. Language may be another problem as robots have to be able to understand man's speech. Experts are divided as to when robot assistants may become a reality. Some ofscisay five years, others say fifty. Maybe soon household robots may be as common as home computers. 

When I was 7 years old I wanted to have a dog but I was not sure that my mother would let me keep it. Howewer one day I asked her whether I could have a small dog to play with. I thought she would refuse at once, but she said that dogs are good animals. She said that she would let me keep a dog, but only if I would take care of my pet. I was really surprised to hear that answer. Of course I was ready to walk with my dog and feed it. I wasn't sure whether I knew everything about keeping dogs as pets, and so I said to my mother. She answered that the would help me, if necessary. The next day we went to a shop and bought a nice dog. We called it Harry and he was my good friend for many years. And I never failed to feed it, as I promised.