1. I was ill ,so I        __(不得不)stay at home today.
2. You____   (不必)return that book to me at once.
3. We        _ (可能去)to visit my father's farm during the summer vacation.
4. You    ___  (可以)call him. He   __   (不可能)do anything else this afternoon.
5. ______(或许)she will invite you to her party ,too.

A: Excuse me,sir ？Where is the nearest hotel ？
B:   1  . You  may  ask  that  policeman  over there.
A: Thank you all the same.    
(The man goes to the policeman. )
A: Excuse me,   2  ？
C: No. there isn't a hotel near here ，but there is one near the Bank of China.
A:   3  ？
C: It's about two kilometers away.
A:   4  ？
C: You'd better take a taxi ，because it's so late and there aren't any buses now.
A:   5  .
C: You're welcome.

根据汉语提示，完成句子。每空限填一个单词。
1. 也许天气会变好。
      ___  _ the weather will get better.
2. 这里的水可能还不够暖，还不适合游泳。
    The water here_____be warm enough to swim.
3. 下周如果能休假，可能不是件坏事。
    It____   be a bad thing if we took a holiday next week.
4. 我到处都找不到我的钢笔，恐怕我得再买一支新的。
     I can't find my pen anywhere , l'm afraid I _____buy a new one,
5. —我必须要带一件雨衣吗？
    —不必。
    —Must I bring a raincoat with me?
    —No, you_____．

1. When he was five, he_________(begin) to  read  and write．
2. If you ask him,he_______(help) you.
3. When water________(become) gas,we call it steam.
4. We________(have)a ball game if it is fine tomorrow.
5. As soon as water boils,it________(change) into vapour  little by litle.

1. I think Erin should tell her friend Anna not __________ (be) late for class again.
2. __________ we __________ (need) to buy some more chicken, mom?
3. Don't let the students __________ (do) lots of homework.
4. Could you please __________(bring) your photos to school?
5. Can I borrow some books __________ the library this afternoon?
6. We'd like you __________( play) volleyball with us.
7. All my friends __________ (invite) to the party, but he __________ (not invite) me.
8. Can you see some boys __________ (play) basketball over there?
9. I think they need more time __________ (study) so that they can get good grades.
10. The old man seemed __________ (know) nothing about this accident.