I’ve talked a lot about walking.      , I want to say it is a cheap, safe and enjoyable form of exercise.

---I’d like to go to the movie with you, Dad. ---Sorry, my son, but only the grown-ups are ________ into the cinema.

It was in the business meeting that I made the _____ of Mr. Black.

I don’t believe we’ve met before，________I must say you do look familiar.

According to a UN report, one third of the world population have no _________ to clean drinking water and health care.