问题

I failed in the final examination last term and only then_____ the importance of studies.

A:I realized
B:I had realized
C:had I realized
D:did I realize

正确答案是：

同类题型

When asked about their opinions about the schoolmaster, many teachers would prefer to see him step aside ________ younger men.(2011·湖北，30)

What’s that terrible noise—The neighbors ____for a party.

How thewind sounds! Why not stay at home sucha rainy day

We keep the belief that the bright future______ to those who are well educated

does it take you to do your homework every day— About one hour.