After walking for half an hour, he suddenly realized that he _____ in the wrong direction. A: was walking B: has been walking C: had been walking D: walked

12._______is a healthy outdoor activity. A: A. walking B: B. Walking C: C. To Walking D: D. Walked

14._______is a healthy outdoor activity. A: A. walking B: B. Walking C: C. To Walking D: D. Walked

Saying ______/ Walking away means simply rejecting or walking away.

I met a good friend of mine while I ____ on the street.（1.0分） A: walking B: was walking C: is walking D: walks

____to school yesterday morning, I met a friend of mine. A: I was walking B: walked C: While I walking D: walking

如将“Walking feet”读成“Walking feets”,这属于

她在遛狗吗？ A: Is she walking a dog? B: Are you walk a dog? C: Is she walking dog? D: She is walking a dog.

Which is a compound sentence?I like walking on the beach with my dog.I like walking but my dog likes running. A: I like walking on the beach with my dog. B: I like walking, but my dog likes running.

They are walking in campus.