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
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   I’ll be surprised _____ an accident. He drives too fast.
#70424
A
if Tom doesn’t have
B
if Tom has
C
unless Tom doesn’t have
D
unless Tom hasn’t
______ at the top of the Oriental Tower, people below will look very small.
#67600
A
Stand
B
Standing
C
To stand
D
If you stand