( )you see,both coats are beautiful.i really do not know_____________.
a)which to buy
b)how to buy
c)what to buy
d)to buy which

大家帮个忙。

谢谢，能说一下原因嘛？

谢谢。说下原因吧。

你是凭语感的吗？？

虽然还是不太明白。。不过真的很感谢。

嗯。老师说语感也是很重要的。

噢。懂了。

嗯。谢谢。