The early pioneers had to          many hardships to settle on the new land.

— I have no question at the moment, sir. — Don’t ________ to call me if you need a hand. I’ll help you.

.She was terrified of saying something that would make her______herself.

I was late for school this morning because the traffic was ___by an accident．

These pictures _______ us of the happy days which we spent together on the campus.