Usually,the organizing committee should have a________meeting every two weeks.
It is believed that high achievers work toward personal standards of excellence ______ material rewards.
In order to keep healthy, he _____ an hour every day to take exercise.
— I’m fed up with this rain. How I wish to go hiking this weekend!— Forget it. I’m afraid the wet days will _____.
— You couldn't have done a better job for me, Jack!— Thank you, Mr. White. ______.
Holiday is ______ time for leisure. But making good use of ______ time is not an easy task for most people.