Polar bears live mostly on __________ sea ice, which they use as __________ platform for hunting seals.
Mr Wang ________ in our school for ten years.Now he has got a job in Australia.
I can’t tell which is better, ________ I am a green hand.
When Phillip lost his competition, Mark did his best to ________ the news gently.
―How come I didn’t get the message that we were to have the meeting at 4 pm? ―Well, your phone ________ it.
Christmas is ________ becoming a traditional British holiday rather than a Christian one.