You usually do not need to take pills for vitamins, _____ can be
obtained from the food you eat.
A. most of the vitamins
B. most of which
C. as most of which
D. most of them
请教各位老师，这道题是否选B，谢谢。
以下表达方式中的to都是介词，根据句意的需要，后面可以接名词、代词或者动名词（即动词的-ing形式），不能接动词原形。admit to 承认apply oneself to 致力于apply to 适用于be addicted to 沉溺于be attentive to 注意；关怀be equal to 胜任be ...
...n and woman has.....; each man and woman has.....;(把and后面的every、each可否删掉？)问题2； No men and no women in that city have voted against him.(用has还是have？ 主谓一致里 这个no 是不是只能接单数名词？)
刚看到这样一个句子，请注意句中的fees very loose：If a tooth feels very loose, your dentist may recommend that it’s taken out. 如何理解这个feel，它应该是连系动词吧？它是什么意思？表示“感觉”，还是表示“摸起来”？但怎么都说不通啊！...
The roof leaks in a heavy rain. 下大雨时屋顶漏水。Heavy rains hindered traffic on the highway. 大雨阻碍了公路交通。The river rose after the heavy rain. 大雨过后河水上涨了。这三个句子，为什么一个用 a heavy rain，一个用 heavy rains，一个用 the heavy rai...