英语 选择题 求详解！（出自新概念英语第三册课后练习第22课） 好的加分!

Question

He always insisted____ in full.
a) on its being written out b) on writing it out
c) to have it written out d) that it would have to be written out
答案为a。
希望高手能解释下，谢谢！

Answer 1

答：新概念英语课后练习，要结合课文内容来做才答案唯一的。
课文句是：
Even though the noble was expected to read the letter at each performance, he always insisted that it should be written out in full.

He always insisted____ in full.
a) on its being written out b) on writing it out
c) to have it written out d) that it would have to be written out
所以答案是A。
析：insisted that-从句用虚拟语气，用should+V而不是would+V,所以排除D
insisted that sb. (should) do sth. 也可以改写作：insisted on sb's doing sth.
排除C
原句是that it should be written out in full, 所以A正确：its being written out

如果不有课文，单独一句话，则B也是正确且可能的：
He insisted on writing it out in full.=He insisted on his writing it out in full.=He insisted that he should write it out in full.
而这与原文是不一样的。

Answer 2

这是一个固定搭配，insist on doing，其他项不用看，排除还剩a b了，a是被动，b是主动，由句子可以猜出意思是他坚持那个被写满，所以可以知道应该选a

Answer 3

排除acd，
insist on doing固定搭配。就这么简单追问

但是b也是on doing