—Comeandjoinus,Ben!—I'mafraidIcan't.I'mtoobusynow.IfI

问题详情：

—Come and join us, Ben!

—I'm afraid I can't.I'm too busy I ________ time, I would certainly go.

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

【回答】

A

知识点：动词时态

题型：选择题