—I’m sorry but the manager isn’t here yet. Shall I have him call you when he comes back?—

问题补充：

—I’m sorry, but the manager isn’t here yet. Shall I have him call you when he comes back?

—No, I’ll call him later. If I call again in half an hour, do you think he ?

A. arrives

B. has arrived

C. will arrive

D. will have arrived

答案：

A. arrives

B. has arrived

C. will arrive

(答案→)D. will have arrived

解析：考查时态：句意：--对不起，但经理不在，回来后我让他打电话给你好吗？--不，我晚些时候再打电话给他。如果我半小时后打电话，你认为他会回来了吗？可知是半小时后将已经回来，用将来完成式。选D。