We still cannot persuade him to give up smoking ____ hard we tried.
| A．so | B．how | C．though | D．however |
Sarah hoped ____ back and study in our school again, so she called her class teacher
| A．to go | B．went | C．gone | D．going |
finishing his homework, he went to play basketball with his classmates.
| A．In | B．Upon |
| C．As soon as | D．At |
---Do you know where Mary is? ---No, I don’t. I ____ her since last Sunday night.
| A．haven’t seen | B．didn’t see |
| C．won’t see | D．don’t see |
is not easy to find a best friend in a new place.
| A．What | B．Which | C．When | D．It |
The student ____ can speak good English is my best friend.
| A．whom | B．whose | C．who | D．when |