He waited until the volcano became quiet.He waited ( )quiet.
问题描述：
He waited until the volcano became quiet.He waited ( )quiet.
A.to the volcano to become
B.the volcano to become
C.the volcano became
D.for the volcano to become
答
He waited until the volcano became quiet.He waited ( D.for the volcano to become ) quiet.
他等待这座火山安静下来.
wait for sb to do,等待某人做某事.wait后要用介词for,还有不定式to do做宾语补足语.