Some of them()(not make)model planes.They()(play)with toys.

问题描述:

Some of them()(not make)model planes.They()(play)with toys.

are not making
are playing
他们有的没在做飞机模型,他们在玩玩具。
简单嘛·

Some of them(don't make)model planes.They(plat)with toys.

aren't ,making ,are ,playing