—Who______ it be that is knocking at the door?
—It ______ be Father, but I’m not sure.
| A．can; must | B．can; may | C．must; can | D．may; must |
相关试题
. —How would you like your coffee?
—________________.
| A．It’s well done | B．The stronger, the better. |
| C．One cup. That’s enough. | D．Very nice. Thank you. |
The number of people invited _____ fifty, but a number of them ______ absent for different
reasons.
| A．were; was | B．was; was | C．was; were | D．were; were |
He ______ have attended the meeting t
his morning. He has been staying at my home for a whole day.
| A．can’t | B．mustn’t | C．shouldn’t | D．needn’t |
______ another button and your meal is prepared and heated for you.
| A．If you press | B．To press | C．Press | D．Pressing |
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