Is it Lily,the one who is good at maths,______is helping you

i know you are student who is good at maths中who是什么? He is a boy who is good at maths who is good at maths是定语从句 那 I know you are student who is good at maths 是定语从句吧 is,maths,diffcult,fou,you?are,you,good,at,it?怎么回答 lin tao is the only one of the boys who (is,are) good at swi he is the only one of the students who is good at singing Lily is good at English 改为同义句 Lily is good at maths.Lily____ _____ _____maths. Peter is good at maths.He always does the exercises________( Do you know who is c____of the Helping Hands Club Susan is the only one of the girls who ( )good at swimming.A Daniel is good at maths转换成近义句