It _________ be the postman at the door. It’s only six o’clock.
| A．mustn’t |
| B．can’t |
| C．won’t |
| D．needn’t |
"Life is like walking in the snow", Granny used to say, "because every step”
| A．has shown | B．is showing |
| C．shows | D．showed |
–Were you caught in the rain yesterday?
–Good luck, No sooner ____ home than it poured down.
Scientists have many theories about how the universeinto being.
| A．came | B．was coming | C．had come | D．would come |
The majority of employers are planning to cut down on wages＿＿＿＿the economic crisis.
| A．by means of | B．in defence of |
| C．in reaction to | D．with regard to |
－prlfessor, do you have somethingat this moment?
－No,thanks.I'llcall you if there is any.
| A．typing | B．typed | C．to type | D．to be typed |