Now teenagers are very busy with their schoolwork all the time and they have _____ time to do sports.
| A．few | B．little | C．a few | D．a little |
I never doubt ________ his advice is of great _________ to me.
| A．that; helpful | B．if; help |
| C．whether; helpful | D．that; help |
—Is David coming by train?
—He should, but henot. He likes driving his car.
| A．can | B．need | C．must | D．may |
US First Lady Michelle Obama encouraged students to study abroad in herwhen visiting Peking University on March 22, 2014.
| A．story | B．speech | C．letter | D．diary |
Be quick, ___________ we’ll be late for the meeting.
| A．and | B．but | C．so | D．or |