1. He always r______ his bike to the subway station.
2. The bus ride usually t______ about 40 minutes.
3. When it r______, I often take a taxi home.
4. Every morning he l______ for school at around half past six.
5. In China, are bikes and buses the most popular means of t______?
6. In our school, a small n______ of students take the subway.
7. All living things d______ on the sun for their growth. (生长)
8. Taking a boat to go to school must be a lot more f______ than taking a bus.
9. Don't w______ about your mother . Let me look after her.
10. This picture is d______ from that one.

A. must have
B. must be have
C. must be

Tina: Where's Katy gone? 1.                             . 
Sandy: She's lucky. She has got a two-week vacation staring this month. And she's already on her way
           to Hawaii right now.
Tina: Oh, how much I envy her!
Sandy: So do I.
Tina: 2.                           . By plane?
Sandy: 3.                            . 
Tina: Taking a boat? She can save time if she flies.
Sandy: She said she has a long vacation. 4.                             . 
Tina: She's right. She can swim, dance and read.
Sandy: And she can sit in the sun.
Tina: Well, she must sit in the sun.
Sandy: No, she isn't.
Tina: 5.                             . 
Sandy: Because it's after midnight in the Pacific now.

1. My mother goes to Beijing _________ (two) a year.
2. Thanks a lot for _________ (teach) us so well, Miss Green.
3. He would like _________ (have) a cup of tea.
4. Today is Tom's _________ (fourteen) birthday.
5. You should exercise to stay _________ (health).
6. My father _________ (buy) some DVDs for me yesterday.
7. How many _________ (mile) is it from your home to your school?
8. Taking a boat must be a lot _________ (much) fun than taking a bus.
9. Thanks for your _________ (invite) to your house next week.
10. You should help your sister when she _________ (need) help.