Not only I but also Tom and Jack ___ interested in English because it ____useful.
| A．is； is | B．is ； are | C．are； is | D．are； are |
---Where is the scientist ________ gave us the talk yesterday?
---He has gone back to Qinghua University.
| A．whom | B．who | C．whose | D．which |
The letter _______ I received from him yesterday is very important.
| A．who | B．where | C．what | D．that |
---Does the teacher know everybody _______ planted the trees?·
---Yes, he does.
| A．which | B．whose | C．where | D．who |
I don’t know if he tomorrow. If he , I’ll meet him.
| A．will come; comes | B．comes; comes |
| C．will come; will come | D．comes; will come |
We won’t put off our plan __________ it snows heavily tomorrow.
| A．whether | B．unless |
| C．because | D．While |