单选题：There' s no light on--they__________ be at home．

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题目内容：
There' s no light on--they__________ be at home． A．can't
B．mustn't
C．needn't
D．shouldn't

参考答案：
答案解析：

个人贷款可以发放外币贷款。（　　）

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When Johnson said he had an injection in his neck each evening, he really mean

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What do we know about people sleeping in the space shttle?A．They sleep while li

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--Is Tom coming with us?--He can't--he__________ for his exams．A．prepares B．is

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电路如图1-4-4所示，电流i1=3+5sinωtA．，i2=3sinωt-2sin3ωtA，则1Ω电阻两端的电压uR的

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分类：英语  题型：单选题
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