看这题: 1.The river flows through three countries before _____ into the sea..(说明理由)。
2.I want to know then he _____ for New York. (翻译加解释)
逗号的用法:例句
I think you might be interested in Picture Number 978 in our list,which I will be happy to send to you if you wish.
语法问题: 怎么区分及物和不及物动词??
拜托大家了。.. 谢谢..