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Dien : can;can't;could;couldn't;will be able to;won't be able to
1. Tom is ill so he ___can't__ play football with us now.
2. I ____couldn't___ read and write untill was seven
3. Tony ___could___ play the piano very well at the age of 6. He won a second prize music competition
4. She's old but she doesn't have to wear glasses. She ___can__ see very well
5. In 2020,robots will be able to recognise our voice and face but they __won't be able to__ think like humans
1. Tom is ill so he _can't____ play football with us now.
2. I ___couldn't____ read and write untill was seven
3. Tony ___could___ play the piano very well at the age of 6. He won a second prize music competition
4. She's old but she doesn't have to wear glasses. She _can____ see very well
5. In 2020,robots will be able to recognise our voice and face but they __won't be able to__ think like humans
4 Fill the gaps with can, can't, could, couldn't, will be able to or won't be able to.
- In the past, robots_____couldn’t___ teach in classes, but they can now.
- Robots can't talk now. In 2030, they____will be able to____talk to people.
- Mr Van___could___ run very fast when he was young. Now he____can’t.___ .
- In 2030, robots will be able to talk to us, but they __won’t be able to__ do more complicated things.
- My little sister is very clever. She____can____ already read some words.
Air pollution can make people sick.
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1. couldn't
2.can't
3. been able to
4.can't
5.can
6.was able to
7.managed
8. be able to