单项选择题
She will tell us why she feels so strongly that each of us has a role （）in making the earth a better place to live．
A.to have playedB.to playC.to be playedD.to be playing
单项选择题 The old lady（）her niece to inherit her wealth after her death．
单项选择题 We’ll send a medical team which is made（）twelve doctors．
单项选择题 Fred is second to none in maths in our class，but believe it or not，he（）passed the last exam.
