I will share with you a story happened a few days ago. One of my classmate bought a bag of snacks from a food store. A few roommates were then invited to enjoy snacks. Unluckily, all of them got poisoned and had stomachaches with our faces pale. They are quickly sent to a nearby hospital. Doctors examined them but gave them some medicine. They were out of danger soon before taking the medicine. This accident should make us to realize the seriousness of the food safety problem. I strong suggest that the whole society pays more attention to food safety.happened改为that/ which happened或者happening
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(答案→)happened改为that/ which happened或者happening
解析：文章讲述作者身边发生的事情 ，几个同学吃零食中毒，幸亏救治及时才脱离危险，作者强烈建议全社会关注食品安全。
【小题1】我和你分享几天前发生的事情。Happen是不及物动词，不能用被动，可以把happened改为that/ which happened这样的定语从句，或者改成现在分词happening
【小题2】我的一个同学从商店买了一包零食。One of后面接可数名词的复数：classmate改为classmates
【小题3】几个室友被邀请去吃零食。这里指上文提过的零食，表示特指：snacks改为the snacks
【小题4】不幸的是，他们都中毒了，脸色灰白胃部疼痛。主语是all of them后面用their;
【小题5】他们被很快送往附近的医院。因为是讲述过去的事情，用一般过去式：are改为were
【小题6】医生给他们做了检查并给他们一些药。是并列关系：but改为and
【小题7】吃了这些药后他们就脱离了危险，before改为after
【小题8】这个事情使我们意识到食品安全问题的严重性。Make sb do sth，用省略to的不定式做宾语补足语
【小题9】我强烈建议全社会关注食品安全。修饰suggest 用副词strongly
【小题10】主句的谓语是suggest从句的谓语是虚拟语气：should do，should可以省略：pays改为pay