Complete using can, can`t, may, may not or must.
1) you lend me your dictionary, please? I really need it.
2) Rebecca is eighteen months old. Now that she walk, I have to watch out for her all the time.
3) Rogercome to the cinema with us because he has a lot of studeng to do.
4) Jane have bought a car. I saw her driving past my house this morning.
5) “I`m surprised that John didn`t answer the door. I rang the doorbell many times.”
“He have been sleeing”.
6) I play a game on your computer?
7) They have walked all the way to town. It`s too far!
8) I have some more juice, please?
9) They afford to rent a summer house this year, so they`ve decided to go camping instead.
10) “I`ve got a temperature and a sore throat.”
“Oh, you be feeling awful!”

1) Can you lend me your dictionary, please? I really need it.
In this sentence, "can" is used to ask for permission. The person is asking if it is possible for the other person to lend them their dictionary.

2) Rebecca is eighteen months old. Now that she can walk, I have to watch out for her all the time.
In this sentence, "can" is used to express ability. The person is stating that Rebecca has the ability to walk now.

3) Roger may not come to the cinema with us because he has a lot of studying to do.
In this sentence, "may not" is used to express possibility or permission. The person is stating that there is a possibility that Roger will not come to the cinema because he has a lot of studying to do.

4) Jane may have bought a car. I saw her driving past my house this morning.
In this sentence, "may have" is used to express possibility or uncertainty about an action that happened in the past. The person is stating that it is possible that Jane bought a car based on the observation of her driving past their house.

5) “I`m surprised that John didn`t answer the door. I rang the doorbell many times.”
“He may have been sleeping.”
In this dialogue, "may have been" is used to express possibility or uncertainty about an action that happened in the past. The person is suggesting that it is possible that John was sleeping and that's why he didn't answer the door.

6) Can I play a game on your computer?
In this sentence, "can" is used to ask for permission. The person is asking if it is possible for them to play a game on the other person's computer.

7) They can't have walked all the way to town. It's too far!
In this sentence, "can't have" is used to express disbelief or impossibility about an action that happened in the past. The person is stating that it is impossible for them to have walked all the way to town because it is too far.

8) May I have some more juice, please?
In this sentence, "may" is used to ask for permission. The person is asking if it is possible for them to have some more juice.

9) They can't afford to rent a summer house this year, so they've decided to go camping instead.
In this sentence, "can't afford" is used to express inability or impossibility. The person is stating that it is impossible for them to rent a summer house this year because they do not have enough money for it.

10) “I’ve got a temperature and a sore throat.”
“Oh, you must be feeling awful!”
In this dialogue, "must" is used to express certainty or strong belief. The person is stating that it is certain that the other person is feeling awful based on the symptoms they mentioned.