根據所給詞的適當形式填空。（共10小題；每小題1分，滿分10分）

1. Many birds can live _______________ (comfortable) in Zhalong all year round.

2.Did you have a nice time _____  _(ski) last week ?

3.—Whose are these bags? —They’re those _______________(hero).

4. Suzy ________ (make) a snowman while Kitty was taking some photos.

5._________(wolf) eat smaller animals when they are hungry.

6. Do you know the _________(important) of protecting wild animals.

7. If the temperature ________ (drop) to 0 C, the water will become ice.

8. Thank you for agreeing__________  (let) me go on the trip today.

9. Without the guide’s help, the travelers couldn’t find the way back by           (theirs).

10. Bad weather sometimes causes ___________ disasters. (nature)

While Suzy ______ on the sofa, the phone rang

1. A.
   was sleeping
2. B.
   slept
3. C.
   sleeps
4. D.
   is sleeping

While Suzy ______ on the sofa, the phone rang.