_______have you been to Tianjin?---Twice.
—Congratulations! Your speaking is excellent. — .
When I returned to my hometown, I was nearly lost. Almost_______ had changed.
As soon as he the bus, the poor man realized he had left his iphone5 on it.
—Are you getting on well with Tom?—Not very well, but we used to be friends. The more I know him, ________ I like him.
The problem is too difficult for him. He solve it.