1.I can't find my books. They are________ (miss).

2.What's_______( happen) to them?

3.They were walking________ ( slowly) than us.

4.1 can hear someone______( cry) now.

5. Where have you______( be) ,Mr. Wang?

6.1 think he has_________( break) his leg.

7.He is     ( lie) on the ground.

8.We had better _______( get) you to the hospital.

9.They decide ______( go) and look for the little girl.

造成髌骨横骨折的原因可能是（）

A.间接暴力

B.肌肉拉力

C.积累劳损

D.直接暴力

E.骨骼疾病