—Coach，can I continue with the training?

—Sorry，you can’t________you haven’t recovered from the knee injury.(2012·重庆，30)

A．until? B．before

C．as? D．unless

I had hardly got to the office________my wife phoned me to go back home at once.

(2012·大纲全国Ⅱ，11)

A．when? B．than

C．until? D．after

At school，some students are active ________ some are shy，yet they can be good friends with one another.????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? (2012·四川，4)

A．while? B．although

C．so? D．as

Jack wasn’t saying anything，but the teacher smiled at him________he had done something very clever.????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? (2011·湖南，33)

A．as if? B．in case

C．while? D．though

Please call my secretary to arrange a meeting this afternoon，or________it is convenient to you.????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? ????????????? (2011·江西，29)

A．whenever B．however

C．whichever? D．wherever

________ all of them are strong candidates，only one will be chosen for the post.

(2011·陕西，19)

A．Since? B．While

C．If? D．As

He was so deep in thought，thinking of the problem ________ he knocked into the tree without noticing it.

A．when? B．while

C．because? D．that

We had to be patient because it ________ some time ________ we got the full results.

A．has been；since? B．had been；until

C．was；after? D．would be；before

—Someone wants you on the phone.

—________ nobody knows I am here.

A．Although B．And

C．But D．So

—What do you think I should wear for such a formal press conference?

—Dress ________ you like.

A．how? B．what

C．whatever? D．however