问题
Every second counts in the exam, _________ means you must make the best use of the time available.
A:who
B:that
C:which
D:What;
B:that
C:which
D:What;
正确答案是：
同类题型
Just as Professor Scott often________it，success is ninety-nine percent mental attitude
Why _______ let Tom go to the supermarket with us—Sorry, he ________ his homework yet.
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This was not an easy decision. ____, it is a decision that we feel is our duty.