A           B         C           D

考察定语从句引导词

53. Since the injury is bad, the doctors will operate him immediately.

A            B                C            D

考察动词短语的用法，operate on

54. Let’s hurry up and try to get to the railway station in time, can we?

     A                  B                   C      D

考查反意疑问句的用法

55.He refused joining us last Saturday night. Don’t you think it strange?

       A     B                       C              D

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