I _____C___sure that you________great progress in the future.
A.am,made B.was ,will make C.was,would make D.am,had made
We____A____for Beijing this evening.
A.are leaving B.have left C.left D.had left
Great changes____C_____in Shanghai in the past thirty years.
A.took place B.are take place C.have taken place D.have been
希望能够帮到楼主