—I am afraid this pair of shoes is a little expensive．

—If you really want to buy them, I will give you a ____ of 10 percent．

    A．quantity        B．amount            C．discount         D．account

With your brother's help, I've made great progress in English and I really want to do something for him ____．

    A．in turn       B．by turns            C.in return        D．in answer

—Why are you so late?

—The driver couldn't see clearly because of the fog．____, the road was too icy．

    A．Therefore        B．Otherwise        C．However          D．Besides

The government officials met the workers and engineers working on the stadium, most____ were migrant workers．

    A．of which         B．of who           C．of whom          D．of them

—You ought to have made an apology to Tom yesterday evening．

—Yes, I know I __        __．

    A．ought to have    B．have to          C．should           D．must have

The doctor's treatment has worked marvels: the patient has        completely．

    A．repeated         B．returned         C．recovered        D．reminded

Please don't make so loud noise．The news of the volcanic eruption in Indonesia ____and I want to listen．

    A．is broadcast                         B．is being broadcast

    C．has been broadcast                   D．had been broadcast

"They didn't take measures in time, otherwise the explosions ____．"some experts said．

    A．wouldn't happen                      B．didn't happen

    C．wouldn't have happened              D．mustn't have happened

____ up early in the morning to have a walk, I am sure, you are likely to feel active all day．

    A．Get              B．Having got     C．Getting          D．To get

The company can't afford to buy the latest equipment at present．____,they keep trying new ways to improve efficiency．

    A．On the contrary   B．In contrast  C.Nevertheless    D．Furthermore