(2012·辽宁) Not until he retired from teaching three years ago __________ having a holiday abroad.
He was in the mountain for a year. He felt as if he was ________ from the outside world.
No matter where he is, he makes _________ a rule to go for a walk before breakfast.
There is no point arguing about what ________ the accident. I’d rather you _________ the victims of it.
----You’re coughing badly, Martin. Why not give up smoking?---Give up smoking? Easier said than done, Amy. Once you ________ the habit of smoking, it is very hard for you to _______ .
I regret _______ that I’m busy ______ my lessons.