What're they

What're they what colour are the( they are re --What are these?--They're watchs.改错 改错 :What are this?They're pinapples. They’re long and cold.They're smooth.What are they? What are those?They're books.They are_____,Grace's. 2 _______ what they're talking about .A.They're B.This'sC.Th —What are those?—They're _______. what are those in English?用They’re red. They live on,even when we're gone.What Are what about the food?they're nice.哪里有错 what are the students_( do)?they're _ read books.