________energy，turn off the hot water after you take a shower．
| A．Save |
| B．Saving |
| C．Saved |
| D．To save |
_______ good suggestion! I haven't heard of __________wonderful advice for a long time.
| A．What a; such a | B．How; such a |
| C．What a; such | D．How; such |
—Mr. Ding, I have some problems_______ the passage.
—Remember_______ it three or four times at least.
| A．to understand; reading | B．understanding; reading |
| C．to understand; to read | D．understanding; to read |
—Tom, why did you make no reply to me when I called your name in the street just now?
—Sorry, Jim, I_______ to my wife on the phone.
| A．talked | B．was talking |
| C．am talking | D．had talked |
—Is Kate coming to the party this evening?
—No, she _________ be at the party. She________ to the UK.
| A．mustn't; has gone | B．mustn't; has been |
| C．can't; has gone | D．can't; has been |
The train is going _______ the tunnel. Then it will go ______to the center of the city.
| A．through; towards | B．through; straight |
| C．across; towards | D．across; straight |