I won’t give you any help __________ you tell me the truth. It’s none of my business.

You won’t discover the truth ______ you look into the matter yourself.

_______ is well known is ________ the Diaoyu Islands have been part of China since ancient times.

When you are done with the book, just give it to Lucy or Helen or __________.

It was March 11, 2011 ____ magnitude-9．0 earthquake struck Japan and subsequent tsunami triggered the large-scale crisis．

This college allows students to develop their own interests, to ______　extent they wished．

Jack was halfway back to the village where his mother lived _____ Mary caught up with him.

The little girl crossed a large area of grassland into the woods _________ she realized that she was lost.

________ there is going to be a policy change ________ of those things is going to change.

---- Could I take a few days’ leave, sir?
----- I’m afraid you can’t ___________ the work is being done.