—Will $ 2,000 _______ the cost of the trip? —I’m afraid not. Perhaps I need another $500.   

William found it increasingly difficult to read，for his eyesight was beginning to  ．

 The news about the terrible flood there greatly discouraged __________ there for sightseeing.

The good thing about children is that they        very easily to new envionments.

She has ______ that doctor for three months.