Sometimes food goes bad, but people don't know it, so they eat it anyway and then they get sick.

有时食物变质了人们却不知道，所以还是食用了它，结果就病了。

Get sick to be treated on time.

有病要及时治疗。

Once I think of being sick in abroad, I get sick.

一想到在异乡患病就会令人不寒而栗。

You can get sick to death of a friend regurgitating her partner's opinions.

对于一个只会机械地重复其搭档观点的朋友，你可能会腻烦得要死。

I get sick if I go to school.

我一去上学，就浑身不舒服。