13-14高三上·河北石家庄·阶段练习
1 . A huge amount of oil was spilt on the East Sea, the causes of ______ are still under investigation.
A.it | B.that | C.which | D.whom |
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12-13高二下·北京·期中
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2 . He suddenly fell ill, ______ prevented him from attending his friend’s wedding.
A.why | B.what | C.that | D.which |
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11-12高三上·北京海淀·期中
3 . Advertising can influence consumers' moods,_____ in turn,can influence consumers’reactions to products.
A.that | B.which | C.where | D.when |
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