（）岁的幼儿能够专心地观看自己喜欢的文艺演出或艺术品，有模仿和参与的愿望。

A.3—4岁

B.4—5岁

C.5—6岁

You can use a larger plastic bottle, ____ is cut off, ____ as a pot to grow flowers in.

A．of which the top; with it’s top

B．whose top; with its top

C．whose top; the top of it

D．the top of which; with it’s top