—When did he begin to __________ painting?
—At the age of 12.
| A．take off | B．take on | C．take to | D．take in |
—I have done well in the exam because of no careless mistakes.
—Congratulations! Students can never be _______ careful in exams.
| A．so | B．very | C．too | D．enough |
With so many good friends together with you, you must have been happy during the past National Golden Week, _____?
| A．haven’t you | B．didn't you |
| C．weren’t you | D．mustn’t you |
There are more than 740 million Chinese _______ to second-hand smoking in public places now.
| A．are being exposed | B．exposed |
| C．to expose | D．having been exposed |
When word came _______ Zhang Bichen became the winner of the “Voice of China 2014”, her fans, greatly excited, stood up cheering for her.
| A．that | B．what | C．which | D．where |
—Could I smoke here?
—I’m afraid smoking is not allowed here. If you _______, go to the smoking room, please.
| A．could | B．must | C．would | D．might |