用所给词的适当形式填空 
People don’t like others to ask about their ____  (person)things especially ages.
I met two____   (foreign)on my way to the airport.
The man has a great number of collections. He is a famous ____  (collect).
 Mother got____  (annoy)when she saw her son playing with the sick cat.
 Some students don’t listen to the teachers carefully so they usually fall ____  (sleep)in class.
—Would you mind not____  (play)baseball here?
—Sorry. We’ll go and play in the park.
If you become rich, you will have a difficult time ____  (know)who your real friends are.
Your job will sometimes be very ____  (danger)if you play sports for a living.
The young should speak to the old ____  ( polite).
Reading ____  (be)good for us to learn English better.