If the situation become badly ,a serious problem may come up
Exercise: wasting has become a serious problem in the presen
the problem may lead to more serious ones if xxxx unsolved
this problem may lead to more serious ones if ——unsolved A.m
The high house price has become a serious problem to people
the high house price has become a serious problem people in
this problem may lead to more serious ones if () unsolved
A generation gap has become a serious problem
the population problem has become more serious in developing
It has become a serious problem百度翻译中文
if you love _______,you may become a model.A.dress up B.dres
英语完形填空The water problem may be the most serious problem in t
请帮帮看错哪了 the problem will become more serious in the future.