About“a lot of”

a lot of和a lot about的区别 I know ( )about traffic.A.a lot of B.many C.lots of D.a lot He learned a lot of __ about English Doctors must have a lot of experience about _________ (opera People can know about a lot of global news through He reads ____(a lot of)about English. Benjamin spent a lot of time learing about _____. She knows a lot of about Chinese history 改错 he knows—about english names A：manyB：a lot C：a lot of D：lots know a lot about 为什么Now I know a lot about public signs中,不用a lot of 而用a lot a He know a lot about China可不可以换成He knows a lot of China