what are the smallest birds on earth

what are the smallest birds on earth what on the earth? what are there on earth what on earth are you? 91618：what on earth are the points that interviewers should 英语翻译Hummingbirds are the smallest birds in the world,with so Why you are always on the line? what on earth do you do?是什么意 两个英语谜语1.What is the smallest room in the world?2.What go on There are lots of animals on the earth.What is the biggest a what kind of a() do you thik are the biggest on the earth?已经 是What on earth are they looking at?还是What on earth they are where are the birds they are on the picture