问题
By the time I got to school, I realized that I ________ my backpack at home.
A:have forgotten
B:had forgotten
C:have left
D:had left;
B:had forgotten
C:have left
D:had left;
正确答案是：
同类题型
What do you think of the girl?—Not only ________ well but also ________ modest.
Where are you living now— In Chicago. But I ______ in New York for 3 years.
Can I help you with your heavy box.— ____________.
I hear Tom ______ playing games recently.—______ no wonder he is easy to feel sleepy in class