问题
Where were you at ten o’clock this morning?—I ________ with my friends in the park at that time.
A:fly kites
B:am flying kites
C:was flying kites
D:flew kites
B:am flying kites
C:was flying kites
D:flew kites
正确答案是：
同类题型
How well do you know the Opera House?—I know the place very well. I ____ Sydney many times.
Do you know Neil Armstrong? —- Yes, he is the first man ___ on the moon..
As we know, paper is made ________ wood , that is to say wood is made ______ paper.
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