单项选择题
A.downB.throughC.alongD.in
This song often（）us of the days when we worked together...
单项选择题This song often（）us of the days when we worked together in the countryside.
A.remembers B.reminds C.reflects D.memorizes
This maths problem is easy（）A.work out B.to be workin...
单项选择题This maths problem is easy（）
A.work out B.to be working out C.worked D.to work out
This kind of material expands（）the temperature increasi...
单项选择题This kind of material expands（）the temperature increasing.
A.to B.for C.with D.at
