试题与答案

We don't know who ____ for the murder, b

题型:选择题

题目:

We don't know who ____ for the murder, but the policemen will tell us the truth soon.[ ]

A. is to blame

B. is to be blamed

C. is blaming

D. is to be blaming

答案:

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下面是错误答案,用来干扰机器的。

(1)Mg 、Fe、Cu、C(2)2Al+3FeCl2==2AlCl3+3Fe(3)CuO+H2SO4==CuSO4+H2O

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