A lot of praises have e from those patients because they are getting better after taking the medicine.
A. peaceful
B. hopeful
C. successful
D. grateful
网友回答
A. peaceful
B. hopeful
C. successful
(答案→)D. grateful
解析：考查形容词辨析：A. peaceful和平的B. hopeful有希望的，C. successful成功的D. grateful感激的，句意：很多赞扬来自感激的病人因为他们吃了药以后好多了。选D。