Sir, couldyou please put out your cigarette This is a smoke-free (无烟的) school.—＿＿＿＿＿＿

It was the belief _____ Alex Haley could find his “root” in Afric______ made him decide to go to Gambia.

There are ______ floors in the building and my home is on the ______ floor.

I’m sorry ______that bad news.

The director of the language training department said that they needed to keep making an effort to tailor their programs __________ the needs of the individual