单项选择题
They have discovered a new medical herb，which they have （）a large number of patients and found to have great healing power.
A.operatedB.tried onC.took onD.tried with
单项选择题 What’s meaning of ’draft a contract’？（）
单项选择题 If I had to do something （）with my hands.I would do poorly.
单项选择题 What’s the meaning of ’B/E’in Chinese？（）
