The man called his professor for help because he couldn’t solve the problem by _________.
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A
herself
B
himself
C
yourself
D
themselves
推荐题目
I think _________ important to learn English well.
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A
this
B
that
C
it
D
you are
-    are the keys?-     on the table.
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A
Where, It’s
B
What, It’s
C
Where, They’re
D
What, They’re
There are 40 boys here. Some are from China, _______ are from Japan.
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A
the other
B
others
C
the others
D
other