I missed the first part of the film. It was really a pity．—-You _____home half an hour earlier.

The fireman couldn’t __________ what thedark thing was through the heavy smoke．

I can’t believe that anyone else in the school can swim as fast as you, ________?

Do you want to watch a sports show tonight— ______ . I hope to watch the news.

en stop can be a very frightening experience , ______ if you are travelling at high speed.