The weather is less changeable in December than in November in our city，although it still          be quite varied．

    A．can            B．could       C．may          D．must

哈尔滨市第六中学2011届高三第一次模拟考试

The weather is less changeable in December than in November in our city, although it still ____ be quite varied.

   A. can                B. could              C. may             D. must