Question

【题目】When we got to the air-port, the plane was starting __________.

A. taking off

B. to take off

C. take off

D. to taking off

Answer 1

【答案】B

【解析】句意：当我们到达机场时，飞机正要开始起飞。start to do和start doing，意义基本相同；但现在分词starting后要用不定式。选B。