What do you think of his proposal that improvements____in the old type of vacuum cleaner?

题目

What do you think of his proposal that improvements____in the old type of vacuum cleaner?
A.be made B.will be made C.would be made D.will have to be made
怎么选啊?为什么啊?

答案

A这是一个同位语从句,proposal为先行词,that后引导的从句用（should）+V原desire,advise,recommend,command,direct,order,ask,demand,request,require,insist,maintain,move,propose,prefer,urge,vote等以及它们的派...