24、The owner of the cinema needed to make a lot of improvements and employ more people to keep it running, _______meant spending tens of thousands of pounds．

    A．who               B．that               C．as                 D．which

23、When    ____, they usually hesitated before responding, “My best friend? I can’t think about that?”

A．asking                B．asked                      C．to ask                   D．having asked

22、____________ the problem for many years, he announced that we are now facing the biggest environmental problem of our time．

A．Observed                                                 B．Observing                 

C．Having observed                                       D．Having been observed

21、_________I admit that the problems are difficult, I don’t agree that they cannot be solved．

A．While             B．Since              C．Before              D．unless

20、There are still many people suffering a lot, and we are to do something to __________ poverty．

A．keep out           B．wipe out           C．give out             D．run out

19、Much to the couple’s comfort, their income is now double ______ it was five years ago．

     A．that                B．than               C．which              D．what

18、----Can the project be finished as planned?

------Sure, _____ it completed in time, we’ll have to work two more hours a day．

A．having got          B．to get             C．getting             D．get

17、Desertification is a growing world problem, and nowadays the United Nations and its member countries _________hard to combat it．

    A．are working         B．has worked         C．work              D．worked

16、He said that ________wasn’t his fault not to play as well as me and that I shouldn’t yell at him．

    A．that             B．what                C．this               D．it

15、The one bedroom apartment ___________ its own bathroom and Internet access．

    A．is covered with     B．is surrounded by    C．is stocked with    D．is delivered of