问题

It was not until the teacher had explained it three times _______ how to work out the problem.

A:did he understand
B:had he understood
C:that he understood
D:that he didn’t understood;

正确答案是：

同类题型

The directors have a meeting every Friday ______ there is nothing to discuss.

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ly a debate about ___ isreal beauty has been raisedPeople are pushed to think some questions like ___ is better,artificial beauty or natural one

How are you today—I’m even worse.I don’t eating anything.

________ conclusion，I’d like to say that I believe him.I’m convinced ________ his honesty