本题应选 A.
在句型“It be + adj.+ that - clause"中,that - clause 部分应用 “ should + 动词原形” 的虚拟语气,should 也可以省略.
本题就是考查的这一知识点.只不过从句用了被动语态,且省略了should.补全应为：should be sent
句意：非常重要的是申请表应在截止日期之前送回.
It was essential that the application forms()back before the dealine A.be sent B.were sent
It was essential that the application forms()back before the dealine A.be sent B.were sent
这A与B语法上有什么不同了?
这A与B语法上有什么不同了?
英语人气：316 ℃时间：2019-09-05 08:39:06
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