Methods of studying vary: what works【C1】______for some students doesn’t work at all for others. The only thing you can do is exp

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问题     Methods of studying vary: what works【C1】______for some students doesn’t work at all for others. The only thing you can do is experiment【C2】______you find a system that does work for you. But two things are sure:【C3】______else can do your studying for you, and unless you do find a system that works, you won’t get through college. Meantime, there are a few rules that【C4】______for everybody. The hint is "don’t get【C5】______". The problem of studying, 【C6】______enough to start with, becomes almost【C7】______when you are trying to do three【C8】______in one weekend.
    【C9】______the fastest readers have trouble【C10】______that. And if you are behind in written work that must be turned in, the teacher who accepts it too late will probably not give you good credit. Perhaps he may not accept it at all. Getting behind in one class because you are spending so much time on another is really no excuse.
【C8】

选项 A、week’s work
B、weeks’works
C、weeks’work
D、week’s works

答案C

解析 此题考查名词的数。三周肯定是复数,week必须是复数形式;work是不可数名词。复数weeks所有格直接加“’”。故选C。
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