1. 根据短文内容，从方框中选择恰当的单词，并用其选项号填空

A. classroom   B. mine   C. find   D. a set of   E. call   F. must

    Hello. My name is Linda. This morning I lostkeys and they are silver (银色的). I can'tthem in my bag. Do you see them in the? If you see 3 silver keys, they must be. Pleaseme at 789-6988.