问题
选择题
—Doctor, I am afraid I am getting fat these days.
— slim, you should change your diet and lifestyle.
A.Keeping
B.Keeps
C.Keep
D.To keep
答案
答案:D
考查情景交际。“医生,我觉得我现在变胖了。”“为了保持苗条,你应该改变你的饮食和生活方式。”不定式作主语表示目的,故选D。