Question

—There is someone knocking at the door.

—It must be the computer repairman. I            him to come to fix my computer.

A. call    B. have called

C. called    D. will call

Answer

C

【解析】

考查时态。根据题干——There is someone knocking at the door．（有人在敲门。）——It must be the computer repairman．（一定是电脑维修工。）可知修理工现在已经来了。所以推断可知下文：电话是过去打的。应该用一般过去时态。一般过去时态的构成：主语+谓语动词的过去式。所以答案是：called，故选：C。