----Whose book is this?----It our geography teacher’s. You see his name is on it. A. can

问题补充：

----Whose book is this?

----It our geography teacher’s. You see, his name is on it.

A. can’t be

B. can be

C. mustn’t be

D. must be

答案：

A. can’t be

B. can be

C. mustn’t be

(答案→)D. must be

解析：can’t be不可能；can be可能是；mustn’t be不允许，禁止；must be肯定是。根据句自后半句：你看他的名字在上面，推断出前句句意：他肯定是我们地理老师的。故选D。