--- more word and expression and you will find it easier to read and communicate填know还是knowing
问题描述：
--- more word and expression and you will find it easier to read and communicate
填know还是knowing
答
应该 knowing 吧?
答
Know
从and前后的并列关系可得,前面必须是一个完整的句子,如果用knowing,是一个名词,不符
所以用know,作祈使句