21£®—Did you have a good time yesterday£¬Jane?

    —Yes£¬as you know£¬     party went on in         most pleasant atmosphere£®

    A£®the£»the              B£®a£»the                 C£®a£»a                     D£®the£»a

22£®Linda gave us a detailed          of her trip to Mount Lu after her return.

    A£®explanation          B£®account                C. imagination            D. idea

23. The comments the expert made ______ stock-market bothered him greatly, ______ him not fall asleep all night.

    A. be concerned, which made                              B. concerned, making

C. concerning, making                                       D. to be concerning, made