The students hurried to the classroom the bell rang.
A.as soon as B.until C.if
I’m a singer is a program is enjoyed by people of different ages.
A.who B.what C.that
—It’s said that people died from car accidents last year.
—How terrible!
A.10 thousands B.10 thousands of C.thousands of
You run with the train when it is coming. It’s dangerous.
A.may not B.mustn’t C.needn’t
This math problem isn’t so difficult that I can work it out .
A.easily B.usefully C.quietly
Don’t worry about your illness. The doctor will you.
A.believe B.teach C.treat