笔的种类是the kinds of pens还是the kinds of pen?
笔的种类是the kinds of pens还是the kinds of pen?
kinds of 是种类的意思吗
英语表示许多种类的鱼用many kinds of fish 还是 many kinds of fishes?
all kinds of books还是all kind of the books?
是all kinds of food 还是all kinds of foods?
是some kinds of 还是some kinds of
是different kinds of还是differents kinds of
是what kinds of 还是which kinds of
是many kinds of fruits还是 many kinds of fruit
The different kinds of food___the different kinds of persona
the kind of &the kinds of
The dolphins are __fun.是kind of kinds of 还是a kind of