why do brids fly south in the winter?是脑筋急转弯的

why do brids fly south in the winter?是脑筋急转弯的 why do swan fly south? 脑筋急转弯 Why do birds fly south? Why do birds fly south for winter Why do you like Sparks Fly? 鸟能飞多高是how high can brids fly还是how height can birds fly? riddle:why do birds fly south for winter why does the bird fly Why the bird can fly Riddles:Why do people go to bed?Why do birds fly south?wo de ying yu xue de bu hao= =. 英语翻译1.Why do birds fly to south?2.There is four mistake in this centence.Can you find them? 用所各词的适当形式填空Mary sent ______ （I）a postcard yesterday afternoonHow is your sister going ______(do)that?Some boys are practicing ______(fly)kites in the park.-----Let’s go out for a picnic tomorrow morning.----- ______ （sou 为什么时光流逝?why does time fly? 脑筋急转弯 Why does time fly? fly boy why读音是否相同 脑筋急转弯Why deos time fly im sou life sou