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Iaskedhimwhetherhehaddonealltheworkhimselfwhetherhehadhadanyassistance.A.andB.butC.norD.or

题目详情
I asked him whether he had done all the work himself ________ whether he had had any assistance.
A.and B.but C.nor D.or
▼优质解答
答案和解析
D

因为只有or才能表示选择,意为“(是…) 还是”。