You may keep the book for one more week_____ no one else needs it.

You can only be sure of_________ you have at present; you cannot be sure of something _____ you might get in the future.

— How do you think I can make up with Johnson?
— Set aside ______ you disagree and try to find ______ you have in common.

— When could you have a meal with me?
— I'd like to go _______ it is convenient to you.     

Mary was born in 1752 in a rich family in _____ is now the state of Virginia.

Dr Yuan Longping grows ________ is called super hybrid rice, _________ has a high output.

______ I’m tired of life here, I have been considering trying my luck in another city, but I haven’t decided yet.

— My teacher punished me this morning.
—Why? ______ I know, you’ve done nothing wrong,

The reason ______ the essay（作文） of the Anhui edition of the 2012 National College Entrance Exam is voted the worst is _______ it makes test-takers at a total loss.

Progress so far has been very good. ______, we are sure that the project will be completed on time.