变一般疑问句做肯否回答变否定句

题目

变一般疑问句做肯否回答变否定句
41.Sarah can clean the classroom.42.They are in the zoo.43.There are some flowers in the vase.44.This is my sister.45.We are sweeping the floor.46.We need some masks.47.They like making the puppet.58.Su Hai and Su Yang live in a new house.49.I put a book on my head.50.They sing “In the classroom ”together

答案

Can Sarah clean the classroom?No,she can't.Sarah can't clean the classroom,can she?Are they in the zoo?No,they aren't.They aren't in the zoo,are they?Are there any flowers in the vase?No,there aren't....