必须采取措施防止此类事故在该市发生 用英语怎么说Something must be done _____ _____this kind of accident _____ _____ in this city.
问题描述：
必须采取措施防止此类事故在该市发生 用英语怎么说
Something must be done _____ _____this kind of accident _____ _____ in this city.
答
to prevent ...from happening