— Bob didn’t pass this exam.— He____________.A．should study hardB．should have st

题型：不详难度：来源：

— Bob didn’t pass this exam.
— He____________.

A．should study hard	B．should have studied hard
C．should be studying hard	D．study hard

答案

解析

略

举一反三

–Do you think Professor Smith_________be in the lab?
--I’m not sure.

A．must

B．shall

C．need

D．can

题型：不详难度：| 查看答案

Our house is on the top of the hill, and in winter the winds ______ be pretty cold .

A．can

B．will

C．would

D．shall

题型：不详难度：| 查看答案

---_______ they stop to have a rest?
---No, let them go on.

A．Will

B．Would

C．Shall

D．Should

题型：不详难度：| 查看答案

My bicycle is nowhere to be found. Who ___ have been using it?

A．should

B．must

C．could

D．might

题型：不详难度：| 查看答案

It is required that each of the students chosen _____ good preparations ahead of time.

A．has to make

B．will make

C．should make

D．must make

题型：不详难度：| 查看答案