are theses stories interesting?yes,____ of them are interesting A.all B.both
问题描述：
are theses stories interesting?yes,____ of them are interesting A.all B.both
答
A.题干中these一般指三个或以上的事物.而All用于三者及三者以上,表示“所有”,both只能用于两者之间,表示“两者都.”