a lot of research还是a lot of researches老师说过research是可数名词,研究,可是英语书上出现了a lot of research,到底什么是对的

do a lot of research on a lot of research还是a lot of researches老师说过research是可数名词,研究,可是英语书上出现了a lot of research,到底什么是对的 He _______ a lot of time on research ______ agriculture.A spent into B spent of 帮我解一下题目：1.He did a lot of medical research _____ cancer a lot of 形容可数还是不可数 英语翻译Research shows that the amount of sleep which people need in order to keep healthy varies a lot a lot of 等于many of 还是some? 是 there is a lot of people 对还是 there are a lot of people 对 use a lot of money 还是spend a lot of money 是there are a lot of people、还是there is a lot of people? there is a lot of fruit还是there are a lot of fruit 应该是There are a lot of……还是There is a lot of…… 是 there are a lot of还是 there is a lot of 初一英语概念是sound like a lot of fun还是sound a lot of fun is a lot of rain还是are a lot of rain快 用 take a lot of practice 还是get a lot of practice a few多还是a lot of多 a lot of 、lots of、lot of 后面加单数名词还是复数?