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题目内容
（东北林业大学大学英语）
Albert ( ) his homework yesterday, so he couldn..t come to the party.(本题3.5分)
A、 must do
B、 may have done
C、 ought to do
D、 had to do
A、 must do
B、 may have done
C、 ought to do
D、 had to do
参考答案
