单项选择题
A.climb B.climbing C.to climb D.climbed
Many countries are increasing their use of natural gas,...
单项选择题Many countries are increasing their use of natural gas, wind and other forms of （）
A.energy B.source C.power D.material
Madam, do all the buses go downtown?（）A.Wow, you got th...
单项选择题Madam, do all the buses go downtown?（）
A.Wow, you got the idea. B.No, never mind. C.Pretty well, I guess. D.Sorry, I'm new here
Look! Here（）the famous playerA.comesB.come C.had come...
单项选择题Look! Here（）the famous player
A.comes B.come C.had come D.coming
