---How long does it take us to go to Mount Qingcheng?---It takes us hour or more to go to Mount Qingcheng by subwayA.an;a B.a;an C.an;/
I_______ my homework at nine o'clock last Sunday morning.A. am doing B. was doing C. do
—What could I get my father for Father's Day?—___________getting him a tie?A. Why not B. How about C. Why don't you
The old men are playing chess. Would you mind ________________.A. turning down B. turn down C. turns down
The song Baby Sister ________by Zeng Yike.A. is written B. writes C. wrote
—Excuse me, how can I get to the museum?-- Sorry. It's my______ time to he here.A. one B. first C. once