—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
– What shall we have for dinner tonight?
– Oh, I don’t care．________ will do．
| A．Anything | B．Everything | C．Something | D．Nothing |
What the children in the poor mountain village need ________ textbooks．
| A．is | B．are | C．has | D．have |
I don’t think Richard could have done such a stupid thing last night, ________?
A．do I |
B．could he | C．did he | D．has he |
Don’t ________ when he is telling the story．
| A．break up | B．break down | C．break off | D．break in |
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