— There'ssomeone knocking on the door. Who _____it be?
— It must be Mary. She promised to be here at 8：00.
| A．must | B．need | C．shall | D．Can |
Helen ____ go on the trip with us, but she isn’t quite sure yet.
| A．shall | B．must | C．may | D．can |
Great changes have taken place in Cangnan. We’re sure Cangnan will be even_____ tomorrow.
| A．good | B．better | C．best | D．the best |
Look out when crossing the road, _____ you may be hit by a car.
| A．or | B．and | C．so | D．but |
Tom earned some money____ babysitting for the couple living next door.
| A．in | B．at | C．by | D．of |
— Do you know ___________ woman in pink over there?
— Yes. She is ___________ office worker of Hilton Hotel.
| A．a; an | B．the; the | C．a; the | D．the; an |