Question

       — Come and join us, Ben!

— I’m afraid I can’t. I’m too busy now. If I ________ time, I would certainly go.

       A. had                          B. will have                   C. have had           D. Have

Answer 1

【答案】A

【解析】考查动词的时态。句意：——Ben，来加入我们吧！——我恐怕不行。现在我太忙啦。如果我有空，我将一定去。本句是是if引导的虚拟条件状语从句，主句用过去将来时（would），从句应用一般过去时。故选A。