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.
