1．I think English is easy __to_learn__(learn) if you have a proper way.
2．Up to now, the Project Hope __has_helped__(help) thousands of students who would otherwise have dropped out.
3．When he came back to life, he found himself __lying__(lie) on the floor, with his hands __tied__(tie)．
4．We must practise __speaking__(speak) English every day.
5．Most families went __through__ a lot of difficulties in the war.
6．__In__ theory, a child could live on breast milk forever, but this is hardly practical.
7．It seems good __in__ theory, but it doesn't work in practice.
8．An empty lifeboat was found after the ship Titanic sank，but there was still no __sign__(signal) of life.
9．Although they had tried all the means, the proposal failed to go __through__.
10．Even the best writers sometimes find themselves __lost__(lose) for words.
