this is their clasroom.it is ( ) this的适当形式

this is their【】【love】son this is their clasroom.it is ( ) this的适当形式 this is their two children 为什么用this is? 1.This is their classroom(同义句) this is their (two)english lesson This is their school的同义句是什么 改错：This is their plans for the weekend. This is their house的同义句是什么我急, this is their f lesson , so they are very excited this is their mother 该句子 意思不变 另起一句 this is their way to express__(friendliness,friendship,friendly) Is this their kite?的答句（肯定答句) This money is their weekly pocket money.___ is not a gift.A.They B.It C.Money D.This Many scientists are careless in their way of living.This is because they are very careful in their Many scientists are careless in their way of living.This is because they are very careful in their work and studies翻译 Some people see their pets as members of their family is this good?请用英语表达. this is his brother（改为复数句）( ）( )their(　　） this is because they eat better than their parents的特殊疑问句 ( )Look!this is ___________language lab.A.they B.their C.them