问题
选择题
My mother ________ always wave goodbye to me while I was leaving for school.
A．should
B．must
C．could
D．would
答案
答案：D
考查情态动词。would在句中作“过去常常”之意，故选D。
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My mother ________ always wave goodbye to me while I was leaving for school.
A．should
B．must
C．could
D．would
答案：D
考查情态动词。would在句中作“过去常常”之意，故选D。