Who was that handsome man speaking ______ the meeting yesterday?

昨天在會議上發言的那位英俊的男士是誰？

If John finishes his homework ______ 10 p.m., he can take the last bus home.

如果約翰在晚上十點前完成他的作業，他就能搭最後一班公車回家。

Ken usually comes here ______ Sunday morning.

肯通常在星期天早上來這裡。