I was about to sail away ______ I heard the sound of stamping and singing on the bank, 
#68222
A
when
B
while
C
as
D
the instant
推荐题目
— ____ in this street?   — I think Mr. Black is the richest man.
#73148
A
Whom do you think is the richest man
B
Who do you think is the richest man
C
Do you think who is the richest man
D
Do you think whom is the richest man