IV. Choose the correct answer to finish the sentences.

1. Listen! We (can/ could/ will be able/ were able to) hear a train in the distance.

2. I don’t think he (could/ can’t/ won’t be able to/ will be able to) win the next competition.

3. Michael is very proud to (be able to/ can be able/ will be able to/ could be able) play in a jazz-band.

4. When I was five, I (can’t/ couldn’t/ am not able to/ will not be able to) swim.

5. I have to go to a meeting tomorrow night so I (can’t/ wasn’t able to/ couldn’t/ can’t be able to) come to the party. I’m very sorry.

6. We (couldn’t/ won’t be able to/ will can’t/ want be able to) go to the party. We’re going to a wedding.

7. A: Can you lend me some money?

    B: Sorry, I (couldn’t/ am not able to/ can’t/ won’t be able to). I haven’t got any either.

8. They (wasn’t able to/ can’t/ won’t be able to/ couldn’t) go. The weather was too bad.

9. She (can’t/ will be able to/ could/ couldn’t) go on holiday next month if her parents give her permission.

10. The fishing boat sank but luckily all the crew (couldn’t/ will be able to/ were able to/ can) save themselves.

11. Robot can (see/ guard/ look at/ look) our houses when we are away.

12. Do you think robots can work longer than people (but/ with/ without/ of) getting tired?

13. My father always (do/ does/ make/ makes) coffee at home instead of going to the coffee shop.

14. Nowadays robots can’t talk to people or play sports, but in the future I think they (can/ could/ will/ do).

15. Will robots able (to recognise/ recognising/ to recognising/ for recognising) our voices?

16. (Can/ Could/ Will/ Do) you walk when you was two?

17. Home robots can do things (such/ like/ with/ of) repairing things around the house or looking after the garden.

18. Our future robot will be able to help us (do/ make/ try/ plant) the gardening.

19. Robot will be very useful for our lives but they use (some/ a little/ very/ too much) energy.

20. Can you (told/ tell/ tells/ telling) me the way how to recycle paper?

21. Parents should control what their kid watch (from/ in/ on/ at) television.

22. Walking to school will help (refill/ reuse/ recycle/ reduce) air pollution.

III. Fill in the gap with CAN, CAN’T, COULD, COULDN’T, WILL BE ABLE TO or WON’T BE ABLE TO:

1. They ……………….. go there. They’re too tired.

2. Last week we could go swimming, this week we ………………………..

3. I ……………… speak to him on the phone for three weeks last month.

4. When I was five, I ………….. swim.

5. Dennis ……………… play the trumpet after four months.

6. Luke has passed his driving test, now he ……………… drive a car.

7. Maybe the Smiths …………………… build a new house next year.

8. At four years old, he ……………….. read quite well.

9. When Tim was 16, he was a fast runner. He ……………. run 100 meters in 11 seconds.

10. I’m right-handed. I ………………… write with my left hand.

11. Robots can’t talk mow. In the future, the ……………. to talk to people.

12. In the past, robots …………………… make coffee but they can now.

13. My younger brother …………………. do sums when he was 5.

14. My sister ………………… swim when she was 6.

15.  ……………….. you speak English fluently and quickly?

16. My sister has a sweet voice. She ………………. sing English songs beautifully.

17. I like teaching robots. They …………………. help us study better.

18. Robots ……………………. guard the houses in the future.

19. ……………….. robots lift heavy things some years ago?

20. In the future, robots ……………….. understand what we say.