The door open , no matter how hard she pushed.（2013新课标I卷）
| A．shouldn’t |
| B．couldn't |
| C．wouldn't |
| D．mightn't |
AIDS control and prevention is ato China as well as the whole world．
| A．surprise | B．challenge | C．reaction | D．threat |
tomorrow, our ship will set sail for Macao.
| A．However the weather is like | B．However is the weather like |
| C．Whatever is the weather like | D．Whatever the weather is like |
She wants her paintingsin the gallery, but we don t think they would be very popular.
| A．display | B．to display | C．displaying | D．displayed |
the safety of gas, the government has checked the city’s gas supply system thoroughly.
| A．To ensure | B．Ensuring | C．Having ensured. | D．To have ensured |
—Did you see who the driver was?
—No, so quickly, that I couldn’t gat a good look at his face.
| A．did the car speed by | B．the car sped by | C．does the car speed by | D．the car speeds by |