问题
选择题
Egg prices usually ________ in spring when they are most plentiful.
A．are dropping
B．drop
C．have dropped
D．will drop
答案
答案：B
B 考察时态。句义：春天，鸡蛋供应很充沛，价格通常会下降。由句义和时间状语usually可知，选择一般现在时。
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