They paid fifty percent of _____ they were able to earn to the state.
While watching television, ____.
I’ll have all of the readings ____ by the end of this term if my plan goes well.
—How did it come that you damaged your car so badly? —I ____into a tree on the roadside the other day.
Air pollution, together with littering, ____ many problems in our large industrial cities today.
His advice made me happy, but ____others angry.