The Diaoyu Islands, which lie in ____ East China Sea between China and Japan have belonged to China since ____ ancient times.
Grace doesn't want to move to New York because she thinks if she ________ there, she wouldn't be able to see her parents very often.
If he had spent more time practising speaking English before, he ________ able to speak it much better now.
If we ________ a table earlier, we wouldn't be standing here in a queue.
—Where ________ Mary have put the empty bottles?—She ________ them away. They must be somewhere.
Some young people these days just ________ go out of their homes to contact the real world.