People like to think that life was better in the past. The air was cleaner, the water was clearer, people【C1】______ friendlier, life was safer and, certainly, it was【C2】______ . But were the good old days【C3】______ so good Probably【C4】______ . Many of today’s problems existed(存在) in the past,【C5】______ some problems in the past do not exist today. For example, many diseases(疾病) are【C6】______ control now. It is safe to say that life has always had its problems.【C7】______ existed in the past, they exist in the present and, certainly, they【C8】______ exist in the future. But just remember: in the future, we can【C9】______ at today’s life and talk【C10】______ the good old days! 【C9】