____ they are closest friends is not clearthough they live together.

If you are in trouble, you can _____help from the policeman.

The headmaster decided to have a word with whoever is ________ this matter.[ ]

(2012·济南高二检测)—Mum, I can’t see any point in studying hard—Come on, dearYears of hard study will surely _______ in your future career

Would you mind _____ me some advice on how to makefriends— ______, you’d better be honest to others .