Miss Jones ________ music at Bardon School for five years when she was abroad and now she is an actress.
| A．had taught | B．has taught | C．taught | D．has been teaching |
Their answers are exactly the same — one of them ______ from the other.
| A．must copy | B．must have copied |
| C．should copy | D．should have copied |
Do you think he is lazy？” “I _____ so once, but I don’t now.”
| A．may have thought | B．can have thought |
| C．may think | D．might think |
I heard they went skiing in the mountains last winter.” “It ____ true because there was little snow there.”
| A．may not be | B．won’t be |
| C．couldn’t be | D．mustn’t be |
“Is John coming by train？” “He should, but he _____ not. He likes driving his car.”
| A．must | B．can |
| C．need | D．may |
You _______ pay too much attention to your reading skill, as it is so important.
| A．cannot | B．shouldn’t |
| C．mustn’t | D．needn’t |