—Is David coming by train?
—He should, but henot. He likes driving his car.
| A．can | B．need | C．must | D．May |
—The air pollution is terrible.
— It will be worse ________ we take action to protect the environment.
| A．if | B．unless | C．until | D．When |
- Which of the two T-shirts would you like? - ________. I don't like their styles.
| A．Either | B．Both | C．None | D．Neither |
— He hardly spent any time on his subjects, _________?
—_________, so he did badly in his lessons.
| A．didn’t he; Yes | B．did he; Yes |
| C．didn’t he; No | D．did he; No |
—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; / |