It was not until the teacher had explained it three times _______ how to work out the problem.
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A
did he understand
B
had he understood
C
that he understood
D
that he didn’t understood
推荐题目
A newcomer can find that a new environment is difficult to ______.
#92144
A
deal with.
B
be dealt with.
C
dealing with.
D
being dealt with.
_______ good use of learning resources such as the website and library, and you will make great progress.
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A
To make
B
Making
C
Make
D
Having made
A new planet has been discovered recently. It’s ______ Earth，and hopefully it can support human life.
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A
almost three times the size of
B
three times the size than
C
three times almost as large as
D
almost three times as larger as
It was Tom as well as his friends that ________ for the serious accident.
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A
was to be blamed
B
were to blame
C
was blaming
D
was to blame
______ is know to all, china will be an________ and powerful country in 20 or 30 year’ time.
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A
That, advancing
B
This, advanced
C
As, advanced
D
It, advanced