_________ I have a look at your new MP3? Certainly. Here you are.

Teenagers may run into many problems and it is a _____ for them to be able to talk to someone who understands their problems.

Bill and his sister Sally enjoyed ________ at the dancing party.

Where did you go last night—I ______ to go to Li Lei’s birthday party.

They had much difficulty ____________ the problem and they needed our help.