--- How long do you think it’ll be ______ I can go back to work?
--- Well, you’ll be feeling better by next weekend.

. How can you expect to get everything ______ you never give?

. What the doctors really doubt is ______ my mother will recover from the serious disease soon.

______ English is more and more important for our future, we should spend more time on it.

Your sister has grown up. She is no longer __ she   five years ago when I first saw her.

We leave it to your judgment ____ you should do it.

. I wonder _____ you’re getting along well with your classmates.

Knowing _____, as a matter of fact, one shouldn’t know is a terrible thing．

It is said _________ was how Chinese characters developed.

She had hardly got back to the kitchen ________ the doorbell rang.