问题补充:
he field research will take Joan and Paul about five months; it will be a long time we meet them again.
A. after
B. before
C. since
D. when
答案:
A. after
(答案→)B. before
C. since
D. when
解析:该空表示在我们再见面之前要过很长时间,因此应填before引导时间状语从句。
时间:2018-12-01 07:41:44
he field research will take Joan and Paul about five months; it will be a long time we meet them again.
A. after
B. before
C. since
D. when
A. after
(答案→)B. before
C. since
D. when
解析:该空表示在我们再见面之前要过很长时间,因此应填before引导时间状语从句。