I don’t think that good books are difficult to find ______ how to live a low-carbon life.[ ]

Edward, you have grown up. You should learn to make your own room_________.

Don’t worry. We are old enough to look after ______.

lor, ofthe urban life, is considering hislast years in the countryside after his retirement

She refused to _____ the door key to thelandlady until she got back her deposit.