(   ) 1. ―I must look after my mother at home. She gets a stomachache.

―        Can I help you?

―No,thanks.

   A. What's up?   B. Bad luck!

   C. I'm sorry to hear that.  D. I'm feeling terrible.

5. Fish can't live w        water.

4. Everyone shouldn't throw 1        here and there.

3 . We must wash our hands before m         .

2. Mike feels so t         ， because he went to bed very late last night.

1. ―Do you know what c        the accident?

  ―Sorry,I don't know.

(   ) 5.        he was exercising at the park yesterday morning,he found a purse under the tree.(2013 •湘潭)

   B. Before

   C. Though

(   ) 4. Although he's now an old man,he's        very lively.(2013 •沈阳)

   A. even   B. seldom

   C. still   D. hardly

(   ) 3. ―Honey,stay home before I return.

—I         ， mum.(2013 •武汉)

   A. must   B. can

   C. will   D. should

(   ) 2. You        drive your car so fast.  It's very dangerous. (2013 •安徽)

   A. wouldn't   B. shouldn't

   C. couldn't   D. mightn't