The first textbooks ______ for teaching English as a foreign language came out in the 16th century.
---Why don’t you ______ your ideas on paper? Then you won’t forget them.--- Sounds a good idea.
Mr Smith has_______ cancer for two years but he is still working very hard.
The number of students who took part in the competition last week ________ more than 1500.
I can’t stand _______ when people litter around in public places.
—I’ll go camping this weekend.—