20.It is vital that the work _______ in time. A. is done B. be done C. are done D. was done 怎么做
问题描述:
20.It is vital that the work _______ in time. A. is done B. be done C. are done D. was done 怎么做
答
B
我前面填写了:be finished,道理也讲了,就是it is vital后面要用should + 动词原型的虚拟语气,这里换了一个动词,那就变成be done,举一反三才能学好英语.