You didn’t wait for Mr. Black last night, did you——No, but we ____. He didn’t return home at all.

Excuse me， can you tell me the way to the hospital— along this street. The hospital is the white building at the street corner.

On snowy days, you have to drive very ________ toavoid traffic accident.

It was quite a serious mistake, ____caused by carelessness.

On the Internet, ______ varieties of entertainments _____ which you can entertain yourself bothat work and at rest [ ]