问题
选择题
Mr Zhang left for America in 1998, and he didn't return home 2002. [ ]
A. unless
B. when
C. until
D. since
答案
答案：C
搜题请搜索小程序“爱下问搜题”
Mr Zhang left for America in 1998, and he didn't return home 2002. [ ]
A. unless
B. when
C. until
D. since
答案：C