(1/2)It is these poisonous products that can cause the symptoms o_英语解答

(1/2)It is these poisonous products that can cause the symptoms of the f

人气：311 ℃　时间：2020-06-20 15:17:07

解答

这里使用的是强调句型：it is...that...,因此不可用what代替that.