496] If city noises from increasing, people shout to be heard even at the dinner table 20 years from now. [译文] 如果城市噪音不制止.二十年后人们不得不在餐桌上吃饭就得大声喊叫才能听得见. A. are not kept; will have to B. are not kept; have to C. do not kept; will have to D. do not kept; have to [答案及简析] A. 考查keep-from doing sth.结构的被动形式. 【查看更多】