问题

She works hard ________ she can pass the final exam.
A:since
B:as if
C:unless
D:so that;
B:as if
C:unless
D:so that;
正确答案是:
同类题型
How do you find the match between Spain and Switzerland?—It’s ! Powerful Spain lost the game by 0∶1.
You’d better ______ ask old granny for help because her memory is getting poorer now.
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