The number of students in our school five hundred.
| A．is | B．am | C．are | D．does |
----- Why is Mr . Yang still in the teachers’office ?
---- Maybe he _______ his work yet .
| A．doesn’t finish | B．hasn’t finished |
| C．haven’t finished | D．won’t finish |
When Lucy got the gift from her mother , she couldn’t wait ______ it and have a look .
| A．open | B．opening | C．to open | D．opened |
What ______ have you given to Mr . Smith in his office .
| A．else | B．other | C．others | D．another |
----- What are you going to do this weekend ? ------ I ______ yet .
| A．haven’t decided | B．won’t decide |
| C．have decided | D．didn’t decided |