We should try all means to ensure ourselves_____ all possible risks

Hi, Daming. It’s said thefamous singer will come to Tai’an. Do you know ______—Nextmonth.

I _______ online games for two years, but I’ve never regretted giving it up

The winter holiday is coming. Many students say they are going to a hobby like playing the guitar or dancing.

李明同学说话喜欢引经据典，在下面几种情境讲话时，他引用的古诗文恰当得体的一项是（ ）