It’s suggested that everyone should_______ at least one hour a day to keep fit.
I soon found that the work I was doing ____ by someone else — in other words, I was wasting my time.
Jim won the award, _______ excited everybody in the class.
The reason ______ he gave for being late was ______ he overslept this morning.
In class the teacher’s humorous words often make every student ____ laughter.
Look out! Don’t get too close to the house ______ roof is under repair.