1.It was essential that the application forms __________

1.It was essential that the application forms __________
1.It was essential that theapplication forms ____________back before the deadline.
A.must besent B.would come
C.be sent D.were sent
选B,但为什么不选C?
2.If you _____that night,you mighthave been too late to get your ticket.
A.didn’thurry B.hadn’t hurried
C.wouldn’thurry D.had’t to hurry
我选择了D,为什么?
3.It’s decided that the present rate of deforestation_________to continue.
A.will not be allowed B.is not allowed
B.would not be allowed D.should not be allowed
我选择了A,为什么?

1.楼主看错答案了吧,正确答案是C,而不是B.
It is/was essential that从句 这个固定句型中,要求that从句必须使用虚拟语气,即从句谓语由“should do sth”构成,且should可以省略.
即 C be sent = should be sent
2.B
根据句意可知,它是对过去动作的虚拟.
根据语法规定,if从句使用过去完成时,而主句谓语使用would/could/might have done sth结构.
过去完成时的否定形式即为：hadn't done sth
3.D
同样,固定句型it's decided that从句中,that从句使用虚拟语气,即从句谓语由should do sth构成,should可以省略.
D should not be allowed 还可以写成：not be allowed
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