Question

—________ one and a half months enough for the project to be finished?
—I am afraid not. The professor is ill and only after he recovers ________ go on with it.

A．Is; he can	B．Are; he can
C．Is; can he	D．Are; can he

Answer 1

C

C 考察主谓一致和倒装句。句中主语one and a half months作为一个整体，表示时间，因此谓语部分使用单数形式，排除BD，only+状语 放在句首，后面要使用部分倒装的形式。故C正确。