It is important ______ students ______ carefully in class .
| A．for, listening. | B．of , listen | C．for, to listen | D．of , to listen. |
— Shall we go for a picnic tomorrow?
—Well, it all ________ the weather.
| A．belongs to | B．happens to |
| C．depends on | D．concentrate on |
The old man __________ eats junk food, does he?
| A．sometimes | B．often | C．seldom | D．usually |
Tari Apps（打车软件）can help us travel around more easily．____more and more people like using them．
| A．Or | B．So | C．And | D．But |
—Listen ! Helen is singing in the next room.
It ____ be Helen. She has gone to Beijing.
| A．can’t | B．mustn’t | C．may | D．needn’t |
-The presidents of China and the USA had ________ interview a short time ago.
—And it was ________ great success.
| A．an; / | B．the; a | C．an; a | D．the; / |