He should take some medicine,have a good rest and drink a lot of water.
句意:格林先生应该做什么?
本题考查细节信息。
根据倒数第四、五行句子:
Doctor: You should take some medicine. You should have a good rest and drink a lot of water too.
医生:你应该吃点药。你应该好好休息,喝很多水。
可知本题答案为:He should take some medicine,have a good rest and drink a lot of water.