问题

ne can answer the question _ wecan complete the task in time, do you know— Yes, and this is because we don’t knowthe way _ the scientist used last time

A:should be
B:should
C:should have
D:did

正确答案是：

同类题型

All of us had a good time in the picnic last Sunday.Pity you weren’t there.—I really ________ come but I was looking after my mother in hospital.[ ]

What good weather! Let’s go boating on thelake.—__________.

He has been caught _________ the rain and is wet _________ the skin

Dose the building have a long history? —Certainly. It ______ 300 years.

You can usuallyquite well without knowing the exact meaning of each word.