----.Let’s go to find our manager in his office.--It’s so late at night .He be there .

问题补充：

----.Let’s go to find our manager in his office.

----It’s so late at night .He be there . Let’s make it another day .

A. can’t

B. needn’t

C. mustn’t

D. ought not to have been

答案：

(答案→)A. can’t

B. needn’t

C. mustn’t

D. ought not to have been

解析：考查情态动词。can’t不可能。句意：晚上太迟了，他不可能在那儿。故选A。