Collecting stamps as a hobby ________increasingly popular during the past fifty years。
| A．becomes | B．became | C．has become | D．had become |
Norway is at _____ top of the list, and ______ other top five countries are: Iceland, Sweden, Australia, the Netherlands.
| A．/ ; the | B．the ; / | C．the ; the | D．a ; / |
--How did you find your visit to Qingdao？
---___________________________ .
| A．Oh, wonderful indeed |
| B．I went there alone |
| C．First by train and then by ship |
| D．A guide showed me the way |
Tom raised his handsto say something, but he remained silent in the end.
| A．even if | B．as if | C．so that | D．now that |
For some time the expert __________ people of the health risks caused by passive smoking. He says he won't stop until all the smokers around him decide to quit smoking.
| A．is warned | B．is warning | C．has been warning | D．has been warned |
—_____ that he picked up French?
—It was in 2010_____ he traveled in France.
| A．Was it when; that | B．When was it; that |
| C．Was it when; when | D．When was it; when |