Supplies may （ ）according to seasonal availability but you’ll always find a wide selection.
A、increase
B、fluctuate
C、improve
D、flatter
【正确答案】：B
【题目解析】：increase v. 增加；fluctuate v. 波动，起伏不定e.g. Body temperature can fluctuate if you are ill. 人患病后体温可能会上下波动。improve v. 提高，改善flatter v. 奉承，讨好 be flattered 感到荣幸句意：供应会随着季节的变化波动，但你的选择面依然很广。
