第14题: [单项选择]Exercise cart affect our outlook on life, and it can also help us get rid of tension, anxiety and frustration. So we should take exercise ______. A. regularly B. normally C. usually D. constantly 参考答案:A 答案解析:regularly定期地,经常地。normally正常地。usually通常地,平常地。constantly始终如一地,持续地。