there are a lot of amazing things in the world ,and we cannot u____ many of them .for e_____ ,why ar

题目

there are a lot of amazing things in the world ,and we cannot u____ many of them .for e_____ ,why are some parents b_____very tall while children grow up to be very s_____?why are some animals very c_____while some are not clever at all?why are some people very energetic while some feel t_____easily?we can have many questions l______these ones ,we should try to learn more about this w______ world

答案