The island where these rare birds nest has been declared a _____.
With the development of science and technology,there is no doubt_____Chineseastronauts will land on the moon in the near future.
—David,could I use your car?—Sorry,there is something wrong with it.I will have it________this afternoon.
As we all know,tigers and cats________the same family of beasts.
I passed him a large glass of whisky, _____ he drank immediately.
How many times______ not to play with fire?-I’m sorry. I’ll never do that again.