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题目内容
（大学英语1）
Please choose the best answer for each of the following sentences.
1. I don.t doubt____he will come to attend the commencement ceremony.
A. whether
B. that
C. if
D. what
1. I don.t doubt____he will come to attend the commencement ceremony.
A. whether
B. that
C. if
D. what
参考答案
