This river is so big that it is impossible to build a _______under it without modern technology.
A、canalB
暂无解析
When making modern cameras , people began to_______ plastics for metal.
Freemedicalserviceis_______tonearlyallthecollegestudentsinChina.
Both sugar and salt can ______in water.
This boy was _______ for what he had done in the class.
Sheisalready16yearsold.Butshe_______asifshewerestillalittlegirl.
