题目

— The floor is too dirty.    — I know.  It  _______ for weeks.    A. hasn’t cleaned                  B. didn’t clean    C. hasn’t been cleaned                 D. wasn’t cleaned 答案：C 解析: 略 Every year I _________ the garden competition too, and I always win a little prize for the worse garden in the town! A. enter      B. entered     C. entered for      D. enter for