Question

【题目】They seemed to be too busy _________ to us.

A. practising speaking B. to practise speaking

C. practising to speak D. to practise to speak

Answer 1

【答案】C

【解析】句意：他们好像太忙着练习了而不能跟我们说话。practise练习，是一个动词；speak说话，动词。空前的busy是忙的，常用于句型be busy doing sth.忙于做某事；第二个句型是too…to do sth.太…以至于不能…。故应选C。