—— Hurry up. The bus is coming! —— Oh, no, we mustn’t cross the street ______ the traffic lights are green.
#55778
A
after
B
since
C
when
D
until
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After school he didn’t go home . _______ he went to the Internet café (网吧)..
#58321
A
But
B
While
C
Instead
D
Instead of
Some wild animals are in danger ________ the loss of living areas.
#57493
A
as
B
since
C
because of
D
because
— We’ll visit the Summer Palace_______ there is a heavy rain tomorrow.— OK! Boating on the lake must be great fun.
#56469
A
unless
B
since
C
as soon as
D
if