优优班--学霸训练营 > 知识点挑题
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            • 1. Mary wrote a letter to her parents,______ she missed them and was studying hard.(  )
              A.to be said
              B.said
              C.saying
              D.having said
            • 2.
              I prefer _____ at home all night to make up the lost time to _____ TV programs.

              A. stay; watch
              B. staying; watching
              C. stay; watching
              D. staying; watch
            • 3.
              Can you imagine the difficulty that he had _____ the problems?
              A. to work out
              B. work out
              C. worked out
              D. working out
            • 4.
              It seems you need to apologize quickly _____ a good friend.
              A. avoiding to lose
              B. to avoid losing
              C. avoiding losing
              D. to avoid to lose
            • 5.
              _____ confidence led to his failure in the interview.

              A. Lacking of
              B. Lack for
              C. Lacking in
              D. Lacking
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