______ for the free tickets, I would not have gone to “Avatar” three times.
| A．If it is not | B．were it not | C．Had it not been | D．If they were not |
I will spend half of my holiday practicing English and _____________ half learning drawing．
| A．another | B．the other |
| C．others | D．other |
I ______________ have passed my examination easily，but I made too many stupid mistakes．
| A．must | B．will | C．shall | D．could |
Mom，don’t you think it's OK to play once in a while ____________ it doesn’t affect my studies?
| A．even if | B．unless |
| C．so that | D．as long as |
— Is everyone here?
— Not yet．Look，there ______________ the rest of our guests!
| A．come | B．comes |
| C．is coming | D．are coming |
The boy was so tired that he fell asleep _____________ his mother could take off his clothes．
| A．before | B．after | C．while | D．where |