A great deal of science and technique has been______since China carried out reform and open policy.
It’s nearly time for class to start. The teacher _______ be here soon.
It was playing computer games that cost the boy plenty of time that he ______doing his lessons.
------We want someone to design the new art museum for us.------______the young fellow have a try?
Jack tried to play a trick _____ his sister but she wasn’t taken ________.
One day we will manage to _____the world ______this terrible disease.