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题目内容
（东北林业大学外语3(专升本)）
(单选题) 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
