【C2】A．aB．theC．someD．certain

Some cars are really expensive.（)A、 Certainly they are、They burn less gasB、 I do hope s

The weather has helped me（)some／a certain extent.

______ man is ______ reasoning animal.A．The, aB．The, theC．／, ／D．／, a

Students should be encouraged to use＿＿Internet as＿＿resource.A．∕; aB．∕; theC．the ; theD．the ; a

She bought a bicycle, but when she rode on it one of ______ wheels came off.A、aB、theC

______singer and______dancer is also good at drawing.A．The; aB．The; theC．A; aD．The; /