____ they arrived at the bus stop, the bus had gone.
A. Since
B. Till
C. Once
D. Before
查看答案
I will write it down____ I forget.
A. untli
B. when
C. before
D. as
I have known Jacky Chan____ I was a boy.
A. that
B. what
C. since
D. if
We must camp____ we can get water.
A. when
B. where
C. who
D. what
I will go back to the village____ I came from.
A. where
B. since
C. what
D. when