—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 |
In the _____ of rain in the process of planting trees, you must stop.
| A．event | B．matter | C．affair | D．business |
-- Are you glad to hear from her?
--Of course. _______I dreamed about her several nights.
| A．What if | B．That is to say |
| C．In other words | D．Believe it or not |
______ be laughed at by his mates, he kept about quiet about punishment.
| A．So not as to | B．So as not to | C．In order not to | D．In order to not |
It was __________ computer games that cost the young man a lot of precious time that he
should __________ on his lessons．
| A．to play; be spending | B．playing; spend |
| C．played; have spent | D．playing; have spent |
Only ________ we will invite.
| A．they | B．in this way | C．them | D．when he comes back |