do a lot of exercise 还是do lots of exercise 为什么

do a lot of exercise 还是do lots of exercise 为什么 是a lot of exercises ,还是lots of exercise?为什么?lots of和a lot of They often do a lot of exercise in the g___ do a lot of grammer exersices中为什么exercise要加s 为什么是a lot of exercise而不是a lots of exercises? The heavy boy d____ to do a lot of exercise to lose weight get a lot of exercise翻译 You should do lots of exercise every day to keep yourslf n-- 怎样用get lots of exercise造句 I take a lot of exercise and am very fit 中的am为什么是对的? 英语翻译Let's do more exercise instead of 【这里是watch还是watching】TV what do you think of exercise为题的英语作文.