Isn’t it amazing that I met Francis at the Christmas party?—Really?For how many years ____ each other?

Li Bai, a great Chinese poet, was born is known to the public, but some won’t accept it.

When did you become a volunteer for the elderly——Two years ago. I ______ this group since then.

I’m leaving for Canada on a study trip next week.—________.

The　president　made　a＿＿speech　at　the　opening　ceremony　of　the　sports　meeting，which　encouraged　the　sportsmen　greatly．