I tried to call you _____ I heard from h
题型:选择题
问题:
I tried to call you _____ I heard from him, but you were not in. [ ]
A. since
B. while
C. until
D. as soon as
I tried to call you _____ I heard from him, but you were not in. [ ]
A. since
B. while
C. until
D. as soon as