题目内容
While in college, he was often seen ________ part-time work in restaurants at the weekends.
- A.practising
- B.to be practising
- C.practise
- D.to practise
D
此句为被动语态,且是经常性动作,所以用不定式to practise作主语补足语。
此句为被动语态,且是经常性动作,所以用不定式to practise作主语补足语。
练习册系列答案
相关题目