We playing basketball．We often play it after school．

A lot of small towns in the area are definitely worth ________.

The possibility of a way out of the impasse(僵局) had never ____________ to anyone.

I just received a letter from one of myold school friends—______

_________ scientist Tu Youyou won the Nobel Prize for medicine (诺贝尔医学奖)_________ October 5, 2015.