—China is developing rapidly.
—Yes, to make our country more prosperous, we should firmly the principle of scientific development.
| A．contribute to | B．subscribe to | C．stick to | D．turn to |
This is the first time for him to ______ your beautiful country.
| A．call on | B．pay a visit to | C．drop in | D．come |
I can hardly believe my eyes. What a poor composition you have ______! There are so many wrong spellings in it.
| A．turned into | B．turned off | C．turned to | D．turned in |
The truth, sir, is that the old man _______ across the road when my car hit him.
| A．was to walk | B．had been walking | C．walked | D．was walking |
To find the street where I lived in my childhood is no easy task because the city ______ so rapidly all these years.
| A．is changing | B．has changed | C．will have changed | D．will change |
----She must have gone back to the valley.
----No, she _____. The entrance to it was nowhere to be found.
A mustn’t B needn’t C couldn’t D hadn’t