It won’t be long ______ you regret what you have done.

I’m really nervous before the English exam.—- _______. I’m sure you can pass it.

The man who hit 9 people in a row had drunk so much that his mind could no longer ________ between fantasy and reality. [ ]

________ your answers carefully before you hand in your _________ exam paper.

(2013·山东济宁模拟)It is by no means clear ________ the president can do something to end the strike