搜题
王老师:19139051760(拨打)
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第1题

One big______ of formal education is the high cost.

A、advantage
B、disadvantage
C、practice
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第2题

Unfortunately, there.s _____ protection for kids on the Internet.

A、little
B、some
C、few
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第3题

For instance, they are often polite _____ tone, formal in style.

A、in
B、with
C、by
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第4题

To tell you the truth, sometimes I regret _____ a baby so early.

A、have
B、having
C、to have
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