where is he shopping ______ the mall.

题目

where is he shopping ______ the mall.
A.for B.at C.on D.from
_____ are they talking____?Their teacher.
A.who ,to B.what ,with C.who ,/ D.what ,to

答案

B 在市场,用at
A talk to =talk with 与谁交谈 ,应该是对人的提问,用who