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3. 他們明天上午8點鐘出發(fā)。

They will               at 8 o'clock tomorrow morning.

2. 你們最好保持在一起，否則可能會迷路。

You'd better               ，or you may                .

1. 請注意我講的話。

Please                      what I am saying.

5. We enjoyed       (our) at the party yesterday.

4. Unluckily they got        (lose) in the forest.

3. We must be careful of        (fall) stones when we are in the mountains.

2. He's nervous about        (cross) the bridge.

1. I'm        (starve) ！Let's go out for dinner!

(   ) 5. People        always be careful with fire,or it can be dangerous.

   A. can   B. needn't   C. must   D. shouldn't

(   ) 4. ―        I finish the homework this afternoon.

―No,you needn't. It        before Friday.

   A. Can;can finish   B. Must;must finish

   C. Must;can be finished   D. Can;must be finished