题目

和大人一起读(《小兔子乖乖》，再填空。(填序号)来了，小兔子没开门。来了，小兔子开了门。①灰狼 ②兔妈妈 答案：【1】①【2】②I think you should complain-_____, of course, you are happy with the way things are. A. if B. unless C. as D. because