I often think of those occasions ______ we had a happy time together.
| A．which | B．when |
| C．on which | D．Both B and C |
Lenovo has brought out a new laptop ________ low cost will make it attractive to students．
| A．which | B．where | C．whose | D．what |
Tourism, _______ it brings in money to a country, can also result in damage to the World Heritage sites there．
| A．once | B．while | C．if | D．as |
“Judging the voice, and not the appearance” makes the show—The Voice of China ________from the numerous other reality shows in China．
| A．knock off | B．stand out |
| C．come across | D．get through |
—I’ve given out．I can’t run any farther．
—________, David．You can make it．
| A．No worry | B．Come on |
| C．No problem | D．That’s impossible |
---I suppose it takes quite a lot of patience and confidence to make a good teacher.
---______. It’s far more than that．
| A．I can’t agree more | B．Absolutely |
| C．Not exactly | D．For certain |