--I heard the high-speed train between Beijing and Tianjin ran_____ 350 kilometers a hour.
--That’s right. I’m looking forward to _____it one day.
A. at; take B. at; taking C. by; take
It’s important ______ us students ______ carefully in class.
| A．for; listening | B．for; to listen |
| C．to; listen | D．to; to listen |
Don’t always play tricks ______ your classmates.
| A．in | B．on | C．at | D．with |
Tom is fat. The doctor asks him to ______ and ______.
| A．eat more, exercise more | B．eat less, exercise less |
| C．eat less, exercise more | D．eat more, exercise less |
—Would you like some ______?
—Yes, please. I’m hungry.
| A．water | B．Cola |
| C．bread | D．milk |
—______ do most Chinese people have meals?
—Three times a day.
| A．How long | B．How many |
| C．How often | D．How much |