He________ full marks, but he was so careless as to make a spelling mistake. [

题型：模拟题难度：来源：

He________ full marks, but he was so careless as to make a spelling mistake. [ ]
A. must have gained
B. might gain
C. could have gained
D. must gain

答案

举一反三

—I can"t find my purse anywhere.
—You______have lost it while shopping.[ ]
A. may
B. can
C. should
D. would

题型：期中题难度：| 查看答案

— Tom, my new computer doesn"t work very fast.
— Don"t worry, you know, the Internet sometimes _______ be very slow. [ ]
A. should
B. may
C. can
D. will

题型：模拟题难度：| 查看答案

She is optimistic about everything, but she ______ be very frustrated as well. [ ]
A. could
B. will
C. should
D. can

题型：模拟题难度：| 查看答案

I was on the highway when this car went past followed by a police car. They ______ at the speed of
150 kilometers an hour at least.   [      ]
A. should have been driving
B. must have been driving
C. could have driven
D. would have driven

题型：模拟题难度：| 查看答案

-Will it be a long time _______ I come for the pictures ?
-No．It _______ be ready by 3:00．[     ]
A．that; can
B．since; will
C．before; should
D．until; must

题型：期末题难度：| 查看答案