问题

I don’t understand why you didn’t go to the lecture yesterday afternoon.—I’m so sorry.But I my homework.

A:had done
B:was doing
C:would do
D:am doing;

正确答案是：

同类题型

He is really nervous. He ______back and forth all the night waiting for the results.

How anxious Ruby is! I wonder what on earth she ________.—I’m afraid nobody knowsShe is always so strange

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I tried to his attention, but failed.[ ]

eem toknow little about Yancheng Middle School Aren’t you a teacher here－No, but I________