问题描述:
On Sundays he sometimes ______his clothes and sometimes ______ some shopping.A.Wash; do.B.is washing ; is doing.C.Washes; do.D.Washes ; does.为什么sunday后面有s?and前面和后面的动词需要保持一致吗?还是不管前面的动词是什么形态的,后面的动词要保持原型?
问题解答:
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