Whengoingupstairsordownstairs,weneedtowalkontheright,le...

問題詳情：

When going upstairs or downstairs, we need to walk on the right, leaving the left space for the people who ___.

A. hurry up                 B. look around              C. run away

【回答】

A

知識點：動詞和動詞短語

題型：選擇題