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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.

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
1. won't be able
2. will be able
3. will be able
4. will be able
5. will be able
6. won't be able
7. will be able
8. won't be able
9. won't be able
10. will be able

1.Can
2.can not.
3.will be able to
4.can
5.can, can not
6.will, able to
7.will, able to
8. Can
9. Could hoặc could not
10. Could. Could not
11. Will not be able to
12. Will be able to
13. Could
14.can
15.will be able to, will not be able to

1.Give the correct forms of verbs
1.The Earth(go)...goes.....around the sun
2....Are you writting ..........(you/write) a letter at present?
3.I......haven't cleaned.....(not clean)my room for a long time
2.Make questions for underline words
1.They are planting the tree in the garden
Where are they planting the tree?
2.she will visit ha noi next week
When will she visit Hanoi?
3. she often watches tv at 6.45pm in the evening
When does she often watches tv?
4.we go to school every day
When do you go to school?

1) I couldn't come to the party on time because I got lost
2) Robots will be able to do all of the housework in the future
3) My grandfather could see clearly when he was young
4) Robot won't be able to solve all of our problems
5) In the future, Human drivers will be able to fly without planes
Exercise: Rearrange the words to make sentences
1. come\ I\ got\ time\ the party\ couldn’t\ to\ on\ I\ because\ lost. > I couldn't come to the party on time because I got lost.
2. in the future.\ Robots\ to do\ all of\ will be able\ the housework > Robots will be able to do all of the housework in the future .
3. could\ My grandfather\ he\ young.\ was\ clearly\ see\ when > My grandfather could clearly when he was young
4. won’t be able to\ all of\ Robots\solve\ our problems. > Robots won’t be able to solve all of our problems.
5. In the future,\ be\ able\ planes\ without\ human drivers.\ will\ to\ fly > In the future, human drives will be able to fly without planes .
1/ can
2/ couldn't
3/ won't be able to
4/ can't
5/ couldn't
6/ could
7/ can
8/ can
9/ can't