请问It's our

请问It's our it's our duty to protect our environment/是什么意思请问 It's Our Love 歌词 It's good for our It's()to()()our classroom. 请问一道英语脑筋急转弯Today is our country's birthday .What date is it? 请问IT‘S MINE it's time（）begin our class. It's Our Party Time 歌词 it's out of our league It's time to build our life It's our school h____ s____. 请问一下是否知道 It's time for us （ ） our class .空里填start的适当形式 whose comb is it?it‘s our.哪错了? 请问it's just a it's relaxing()our with our with our friends on weekends It's not our abilities that show what we truly are,it is our choices it's our dutiesit's our duties to help you 是否存在语法错误