---Look at that girl! Is that Susan?
---No , it _______ be her. She has gone back to her hometown.
| A．mustn’t | B．can’t |
| C．must | D．might |
—Have you finished your work？
—No，not yet．I think it’ll take________two hours．
| A．other |
| B．else |
| C．the other |
| D．another |
What will happen if he________to the party？
| A．will come |
| B．comes |
| C．won’t come |
| D．is coming |
They never work hard because they haven’t known the________of study．
| A．importance |
| B．decisions |
| C．results |
| D．ways |
Football is my favorite sport．You’ll never know________I love it．
| A．how often |
| B．how soon |
| C．how much |
| D．how many |
There are some things you should know if you are________about the exam．
| A．outgoing |
| B．serious |
| C．creative |
| D．friendly |