You can try_______ second time if you fail_______ first time.

Don’t forget to take your cell phone— But it’s just been announced thatno students_______ bring cell phones to school

We have gathered nearly 100,000 quilts, up to half have gone to the flood-hit areas.

Tony decided to study abroad _______ he knew he would meet many difficulties

In time we reached a stagewe had more young readers than old ones