Question

【題目】— What do you think of the present economic situation?

— When big firms reduce their expenses, we ______ know that times are really hard.

A. shall B. could

C. must D. need

Answer 1

【答案】A

【解析】句意：-----你對目前的經(jīng)濟形勢有什么看法？

------當大公司削減他們的開銷時，我們就知道這段時期真的很艱難了。這里考查時間狀語從句，從句用現(xiàn)在表示將來，主句用將來，故選A。