His sister left home in 1998, and _______since.
| A．had not been heard of | B．has not been heard of |
| C．had not heard of | D．has not heard of |
If you _____ stop smoking , you can only expect to have a bad cough .
| A．won't | B．would not | C．do not | D．can not |
There must be _____ book which could help .
| A．some | B．any | C．one | D．one useful |
Sarah hopes to become a friend of _____ shares her interests.
| A．anyone | B．whomever | C．whoever | D．no matter who |
The young man spent as much time as he _____ over his lessons.
| A．went | B．can go | C．could going | D．could to go |
--- Who should I send this message to ?
--- The mayor is the one ___ ?
| A．to send it | B．to be sent | C．for sending | D．to send it to |