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Ⅰ.单项填空 1．I have lost one of my gloves.I ________ it somewhere. A．must dropB．must have dropped C．must be dropping D．must have been dropped 2．________time went on，the people in the area came to realize how seriously the environment had been polluted. A．As B．With C．When D．While 3．As soon as I was on________，I began to have second thoughts about leaving. A．abroad B．broad C．aboard D．board 4．—How about________Christmas evening party. —I should say it was________success. A．a；a B．the；a C．a；/ D．the；/ 5．Mr Smith，________with a new mayor，is giving his farewell speech at the meeting. A．replaced B．to be replaced C．to replace D．being replaced 6．Reaching this agreement so quickly was a great________for the meeting. A．appointment B．access C．achievement D．approach 7．Is it by surfing the Net________children get most of their knowledge? | 
