单项选择题

—I don’t understand why you didn’t go to the lecture yesterday afternoon. —I’ m sorry, but I ______ my homework.

A．had done
B．was doing
C．would do
D．am doing
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单项选择题
Around two o’clock every night, Sue will start talking in her dream. It somewhat ______ us.
A．bothers
B．had bothered
C．would bother
D．bothered
单项选择题
We______very early so we packed the night before.
A．leave
B．had left
C．were leaving
D．have left
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