—A new study proves(证明) a walk every day is enough to keep people away from fat.
This morning I went to work in such a hurry that I ___________ the key to my office at home.
If prices rise too high, the government has to do something __________ it.
It’s so cold. You’d better __________ your coat when you go out.
You ___________ finish the report today. Any time before this weekend is OK.
—Who is that little boy in the photo?—It’s me. It ___________ when I was five.