Measures must be taken before there is another collapse of the coal mine, ______

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Measures must be taken before there is another collapse of the coal mine, ______

题型：不详难度：来源：
Measures must be taken before there is another collapse of the coal mine, ______?
A．must theyB．mustn’t theyC．is thereD．isn’t there

答案
B
解析
略
举一反三
It was Alice and her husband who sent the old man to the hospital , _______ ?
A．wasn’t itB．weren’t theyC．didn’t theyD．wasn’t he

题型：不详难度：| 查看答案
— How many jobs _______ Collin Manning, the exchange teacher to our school, has done?
— Five, _______ cook to teacher.
A．is it that; ranged fromB．are there what; ranging from
C．is it that; ranging fromD．are there what; ranged from

题型：不详难度：| 查看答案
—Jack, you erase the blackboard today,______?   
—But I erased it yesterday.
A．have youB．will youC．didn’t youD．don’t you

题型：不详难度：| 查看答案
Sarah had her purse stolen the day before yesterday when she was knocking about in a park, ______________?
A．wasn’t sheB．weren’t theyC．hadn’t sheD．didn’t they

题型：不详难度：| 查看答案
Be tough-minded, but tender-hearted,        ?
A．isn’t itB．are youC．aren’t youD．will you

题型：不详难度：| 查看答案
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