题目内容

Though a foreigner, she___________ a good knowledge of China.

A. acquires
B. knows
C. understands
D. has

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Most of our earth covered by water.

A. are
B. is
C. was
D. were

The population of the world still now.

A. has; grown
B. will; grow
C. is; growing
D. is; grown

Our class big.

A. is
B. are
C. were
D. will

Neither Mary nor her bother _________ good at singing.

A. is
B. are
C. is not
D. are not

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