--Mum, I’m going to visit my uncle. What about staying there a week?--A week is too long. Try to be back in a _____ of days.

Don’t try to persuade your boss; he won’t have the _______of employing me — a fresh student.

According to news reports, personal _____of guns in the USA causes a lot of trouble. 

Mr．Barret doesn’t think that all bad language should be allowed．In his opinion, there are _____ that should be kept up．

Many students like to recite       , which are short,beautiful and rhythmic.