You can’t imagine ________ chatting online is!
| A．how a great fun | B．how great fun |
| C．what a great fun | D．what great fun |
My pen-pal Andrew found ______difficult to learn Chinese well.
A. /B. that C. it
I want to ues QQ to chat with you on the Internet,Can you tell me_________?
A. how to use it
B. how to use
C.what to use
Don’t talk with your partners in class_______ you are asked to do so.
A. ifB. whenC. unless
The volunteer spoke as clearly as she could_____________the visitors understand her.
A. to makeB.makingC.made
--Is Jack in his room?
---No,I saw him _____ out with his backpack just now.
A. go B. going C. went