This morning I __(26)__ to work. I __(27)__ to go by bus because the sun __(28)__. While I __(29)__ past the supermarket, I __(30)__ something strange. A man __(31)__ near me and he __(32)__ a song very loudly on his own! He __(33)__ for a few minutes. Then he __(34)__ a friend and he __(35)__ singing.

A. walked

B. am walking

C. was walked

D. was walking

Answer: Option D