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All is needed is a supply of oilA.the thingB.thatC.whatD.which

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All is needed is a supply of oilA.the thingB.thatC.whatD.which

All is needed is a supply of oil

A.the thing

B.that

C.what

D.which

试题答案

B

此题all为先行词,后面that is needed为that引导的定语从句,且作从句中的主语,由于all为不定代词,此时关系词不可用which,而what不可引导定语从句;当然,若无all可选C,因为此处的All that=what…,若All the thing为先行词,后面缺乏引导定语从句的关系代词that(且在从句中作主语,不可省略),故A后应加that。