—How long do you think it will be______  man can finally solve the problem of cancer?

—Well，it depends

A．when       B．until         C．after  D．before

Tom : Hi, Cathy. ___6___                                 
Cathy: I have to finish my project on the history of the Internet. What about you?
Tom : 7 If it’s fine, we’ll go camping. Would you like to join us?  Cathy: I’d like to, but the deadline for my project is next Monday.
Tom : What a pity!   8                                     
Cathy: Yes, please. Can you suggest any good reference books?
Tom : You may want to read Origins of the Internet and The Digital Future.
Cathy: I’m reading the two books.    9                        
Tom : Go to the Science Museum website, and you’ll find lots of up-to-date information.
Cathy: Good idea. Thanks for your help.
Tom :    10                                       

----May I use your new dictionary? I want to consult it.

----It’s over there.____.

A.  Feel free      B.  Got it    C.  Not problem    D.It depends

- How about having a picnic in the park on Sunday?
- ___________ . Whatever you want to do is fine with me.

 --- Do you think he will come to my birthday party?

--- _________.

--- That’s good. Everyone is expecting him.

A. You can rely on it             B. I don’t know for sure

C. It depends                   D. Don’t worry