The protection of our environment is not _______ to be left to the government. Everyone should be concerned.
To keep healthy, most retired old people____ jogging as a regular form of exercise.
John, may I use your computer now? Sorry, it is not ____at the moment. It is being repaired.
Tom, look at your shirt! It requires ________.
Mr. Smith thought of himself as _______,and this accident had ________ effect on his life.
He feels it dangerous for a girl to be out late at night, so he won’t have his daughter _______ home late.