–Look! A man is cutting a tree on the moon.
--It ______ be true. The teacher said there is no air on the moon.
| A．can’t | B．may not |
| C．shouldn’t | D．mustn’t |
We’ll stay at home if it ______ this afternoon.
| A．rain | B．rains | C．to rain | D．will rain |
He decided to study hard__________ catch up with others.
| A．as a result | B．so that |
| C．in order that | D．in order to |
This dress still looks pretty on you, _______ it is out of style．
| A．but | B．though | C．since | D．unless |
—Mike, could you tell me if Mary to my party tomorrow?
—I think she will if she time.
| A．come, has | B．comes, will have |
| C．will come, has | D．will come, will have |
Jim came into the room ______ Millie sat down on the chair last night.
| A．as | B．while | C．when | D．since |