It's my ____to help those homeless animals(please)

It's my ____to help those homeless animals(please) It's my good --------.(help) The building is on fire .Mr Sun is in ____.And it`s ____to help him out.(danger) It's ____to piay soccer .怎么填? it's my pieasure的同义词help me A:I'll do my ____to help you with your English.B:That's very kind of you.A.good B.better C.best为什么选C? ----It's kind of you to help me .----It's my-----(please) It‘s my duty to help my mother do some housework.改为同义句 -Thank you for your help.I really a_____ it.-It's my pleasure. we will try my best to help you 改为同义句 we will do ___ ____ _____ ____to help you It's very nice of you to help me with my English.中为什么填to help It's friendly of you to help me with my English.（改同义句） It's very kind of you tu help with my English. It's nice of you to help me find my pencil box答句 it's yery kind of you help me with my homework. it's nice of you help/helping/tohelp me with my ma It's ____to finish the work today .It' too difficult.A.true B.impossible C.simple I feel it my duty to help you with your English这句话里,I feel it my duty对吗?如果I feel it's my duty呢?