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题目内容
（国家开放大学理工英语三）
I.m afraid we have to change the appointment . I have something important to do.
A.T hat.s all right
B.I t.s my pleasure
C.I have a busy schedule
D.I wish I could.
A.T hat.s all right
B.I t.s my pleasure
C.I have a busy schedule
D.I wish I could.
参考答案