—You look very worried. ________ ?
—My mother suddenly got ill yesterday.
A. Can I ask a favour? B. Hoe do you do?
C. How are you? D. What’s up?
I found _____ necessary to save energy and protect the environment.
A. that B. this C. it D. one
In our city, _____ middle school students want to work as a teacher in the future.
A. thousand B. thousand of
C. thousands of D. two thousands of
Don’t _____ today’s work for tomorrow. Today’s work must be done today.
A. put up B. put out
C. put off D. give up
—I have no idea what to wear for the singing contest?
—Well, the dress_____ you bought yesterday may be the best choice.
A. what B. whom
C. where D. that
Betty is often seen ____ the old man with his housework.
A. help B. to help
C. helped D. helps
