Theyshould theserulesattheairport. ( )A．toobeyB．obeyC．obeyedD．obeys_刷题宝

题干

They should these rules at the airport. ( )

A．to obey

B．obey

C．obeyed

D．obeys

上一题下一题 0.99难度选择题更新时间:2019-01-26 08:05:20

答案(点此获取答案解析）

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B．shouldn’t

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--Yes, I can.

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