Helen and Mary are good friends. _______often help each other.
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A
Them
B
Theirs
C
They
D
Their
推荐题目
This notebook is not      .
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A
my
B
your
C
Tom’s
D
Tom
 Mr. Lee is ________ teacher. ________ is from China.
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A
his; He
B
he; She
C
his; It
D
my; His