用所给动词的适当形式填空:What's jack doing?He ---(put)on a white shire.

问题描述:

用所给动词的适当形式填空:What's jack doing?He ---(put)on a white shire.

is putting
前面问句is doing 可以看出答句要用正在进行时,而put的u是闭音节,因此要双写 t 加ing