—I’m so tired,helping the family with the work in the field.
—Why not take a rest,then?
—___________.
| A．Because I have no time | B．Maybe I should |
| C．Sorry,I can’t tell you about it | D．I don’t know it |
Mr.Bush is on time for everything.How ________ it be that he was late for the opening ceremony.
| A．can | B．should | C．may | D．must |
—Are you coming to Jeff's party?
—I'm not sure.I ________ go to the concert instead.
| A．must | B．would | C．should | D．might |
—Could I borrow your dictionary?
—Yes，of course you ________.
| A．could | B．will | C．can | D．might |
—Must I go there right now?
—No，you ________.You ________ go there before supper.
| A．mustn't；need | B．needn't；may |
| C．can't；need | D．won't；can |
I was really anxious about you.You ________ home without a word.
| A．mustn't leave | B．shouldn't have left |
| C．couldn't have left | D．needn't leave |