题目内容

Betty is ______.

A. in Grade Four
B. Grade Four
C. a four year student

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【B1】

A. love
B. like
C. take

【B5】

A. need to
B. must
C. have to

The founders of Google are married.

A. Y
B. N
C. NG

The percentage of US billionaires in the list is falling.

A. Y
B. N
C. NG