—— Hurry up. The bus is coming! —— Oh, no, we mustn’t cross the street ______ the traffic lights are green.
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A
after
B
since
C
when
D
until
推荐题目
Jack does his homework ________ Mary. So they both always get good grades in the exams.
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A
so careful as
B
as carefully as
C
so carefully as
D
as careful as
This training program can give you a lift at work, ____ increase your income by 40%.
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A
as well as
B
so long as
C
so much as
D
as soon as
You can’t get good grades______ you study hard.
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A
when
B
because
C
unless
D
that