【C18】A．AB．AnC．TheD．One

She wants（) paper.A. aB. anC. a piece ofD. a pair of

【C18】A．one－fourthB．one－fourthsC．one－fourD．one－fours

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

Would you mind doing me _____ favour？A、aB、anC、theD、 ／

【C2】A．aB．anC．oneD．another