题干
–Would you mind _________ your voice down? We are doing our homework.
–Sorry for that.
A：keep
B：keeping
C：to keep
D：kept
答案(点此获取答案解析）
B
–Would you mind _________ your voice down? We are doing our homework.
–Sorry for that.
A：keep
B：keeping
C：to keep
D：kept
