题目内容
15、― Do you often visit your grandparents?
― Mmm…
________ , I'm afraid. I usually phone them.
A. over
again B. time and
again C. once
again D. now and again
试题答案
15、D
解析：over again反复，time and again和over again 均为又一次之意。now and again时而，只有D与题意相符。
相关题目
― Do you often visit your grandparents?
― Mmm… ________ , I'm afraid. I usually phone them.
A. over again B. time and again C. once again D. now and again