These days,many families keep pet dogs为什么keep不加s 呢

These days,many families keep pet dogs为什么keep不加s 呢 Many people keep dogs as p__. lt is to keep pet dogs英语作文 keep quiet为什么不加ly We keep in our thoughts and prayers the many families . some resolutions are difficult to keep.为什么keep后面不加them you can keep the cars 为什么car要加s I believe that people should not keep pet dogs不是应该否定前置吗 1 Please keep the windows closed.为什么不能用closing呢?不是keep doing IT'S INTERESTING KEEP A PET AT HOME 为什么keep healthy中的keep不加副词,到底什么时候动词加副词或形容词呀,要求说明加例子, I might even keep a pet parrot.为什么用might