21. When the professor found out that I had cheated on the exam, I was so embarrassed that ___.
(A) I could have died.
(B) I hope I could run away immediately.
(C) I didn’t know how to say.
(D) I become speechless.
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統計: A(2), B(6), C(1), D(0), E(0) #3342234
統計: A(2), B(6), C(1), D(0), E(0) #3342234