writting and keeping a diary is a good habit
问题描述：
writting and keeping a diary is a good habit
中间那个为什么是is啊
Reading and writing are very important.
答
因为主语是事情reading and writing 所以用谓语用isthe Reading and writing is very important.加个定冠词后，应该是is了吧不是这个意思。 reading writing是动名词 表示事情。不管是一个或者多个 谓语都用单数