A. Underline the correct option.
1 Dogs can / could travel a long way to find food.
2 Most dogs can’t / couldn’t see the difference between red and green.
3 Often during World Wars I and II, people were not able to / can’t find survivors.
4 However, dogs were able to / will be able to find them.
5 They can / could also carry messages.
6 In the future, scientists will be able to / can make better robot dogs.
Answers
2 can’t 3 were not able to
4 were able to 5 could 6 will be able to
B. Make sentences by putting the words in the correct order.
1 bottle / I / open / can’t / this
I can’t open this bottle.
2 couldn’t / name / her / remember / I
…………………………………………
3 stand / child / able / The / wasn’t / to
…………………………………………
4 at / meet / we / Can / 7?
…………………………………………
5 question / He / the / answer / couldn’t
…………………………………………
6 play / can’t / I / tennis
…………………………………………
7 truck / drive / Can / a / she?
…………………………………………
8 able / come / friends / My / weren’t / to
…………………………………………
Answers
2 I couldn’t remember her name.
3 The child wasn’t able to stand.
4 Can we meet at 7?
5 He couldn’t answer the question.
6 I can’t play tennis.
7 Can she drive a truck?
8 My friends weren’t able to come.
C. Circle the correct option.
1 I … use my mobile here – it doesn’t work.
a can b can’t
c couldn’t d wasn’t able to
2 In 1998, 20% of the world’s population … not write.
a can b can’t
c could d was able to
3 The box was very heavy – I … carry it.
a will be able to
b won’t be able to
c can’t d couldn’t
4 When I was younger, I … read a book in one day.
a could b can
c will be able to d can’t
5 I … take this to the post office. I haven’t got enough time.
a can b can’t
c could d couldn’t
6 I’m not busy. I … go to the post office for you.
a can’t b won’t be able to
c can d couldn’t
7 Don’t stay out late or you won’t … get up early.
a could b can
c be able to d can’t
8 The window was very small but my daughter … climb in.
a wasn’t able to
b weren’t able to
c won’t be able to
d was able to
Answers
1 b 2 c 3 d 4 a 5 b 6 c 7 c 8 d
D. Complete the sentences using can, can’t, could, couldn’t, will be able to or won’t be able to and a verb from the box.
|
come have hear imagine read see speak understand |
1 It’s too dark in here. I ……can’t read…… my book.
2 I want to learn Spanish. …………………. you …………………. another language?
3 When we move to the country next year, we …………………. a dog.
4 We don’t really know what life was like in the past. We …………………. only …………………. .
5 Bats …………………. very well but they have excellent hearing.
6 That film was really boring. …………………. you …………………. what it was about?
7 I couldn’t sleep last night. I …………………. a strange noise.
8 If I go to Australia to study, I …………………. home very often.
Answers
2 Can … speak 3 will be able to have
4 can … imagine 5 can’t see
6 Could … understand 7 could hear
8 won’t be able to come
E. Make sentences about what you can / can’t do now, could / couldn’t do when you were younger or will / won’t be able to do in the future and write them in your notebook. Use expressions from the box or your own ideas.
|
drive run 10 kilometres speak English stand on my head touch my toes with my nose |
Example: When I was four, I couldn’t speak English.
Answers
Possible answers
When I was four,
I couldn’t stand on my head.
I could touch my toes with my nose.
Now,
I can speak English.
I can stand on my head.
I can’t drive.
In the future,
I will be able to run 10 kilometres.
I won’t be able to touch my toes with my nose.
I will be able to drive.
F. Circle the correct option.
1 My dog ………… understand about 20 words in Spanish.
a canto b can c is able
2 But he ………… understand one word of English.
a doesn’t can b can’t c can not
3 When the people ………… the survivor, their dogs helped them.
a couldn’t find
b can’t found
c couldn’t found
4 My dog ………… very fast.
a doesn’t can run
b can’t run
c cannot runs
5 A: Will the robot dog be able to swim?
B: No, it ………… .
a can’t b isn’t c won’t
Answers
1 b 2 b 3 a 4 b 5 c