I can guess you were in a hurry. You your sweater inside out.
| A．had worn | B．wore | C．are wearing | D．were wearing |
-Pity you missed the lecture on nuclear pollution.
-I __________ it, but I was busy preparing for a job interview.
| A．attended |
| B．had attended |
| C．would attend |
| D．would have attended |
-I think I'll give Bob a ring.
-You __________. You haven't been in touch with him for ages.
| A．will |
| B．may |
| C．have to |
| D．should |
-What do you think we can do for our aged parents?
-You __________ do anything except to be with them and be yourself.
| A．don't have to |
| B．oughtn't to |
| C．mustn't |
| D．can't |
I can't leave. She told me that I __________ stay here until she comes back.
| A．can |
| B．must |
| C．will |
| D．may |
I __________ use a clock to wake me up because at six o'clock each morning the train comes by my house.
| A．couldn't |
| B．mustn't |
| C．shouldn't |
| D．needn't |