There are so many foggy days these days. We all want to know .
A. How we can do to prevent it
B. How can we do to prevent it
C. What we can do to prevent it
D. What can we do to prevent it
—The cost of food and clothing is going up nearly every day.
—Yes, the price of vegetables is much than before.
A. expensive B. higher C. high D. cheaper
— Why do you speak in a loud voice?
—Because I want to make myself clearly.
A. such; hear B. so; heard C. such; heard D. so; hear
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
—That must be Mr. John.
—No, it ________ be him. I saw him off at the airport half an hour ago.
A. may not B. mustn't C. can't D. needn't
—Why didn’t you go to play football with us yesterday afternoon?
—I my mother with the housework then.
A. helped B. was helping
C. had helped D. have been helping
