问题
选择题
—It's 10 o'clock now. I must go.
—It's raining heavily outside. Don't leave ______ it stops. [ ]
A. since
B. until
C. when
D. because
答案
答案:B
—It's 10 o'clock now. I must go.
—It's raining heavily outside. Don't leave ______ it stops. [ ]
A. since
B. until
C. when
D. because
答案:B