—Why are you so________?—My son hasn’t been back.It’s dark outside.
All of us find ________ necessary to take exercise every day.
Some people plan to ______ a volunteer program to help the disabled children.
______, Mandy. Everything will get better soon.
Jim’s brothers spent a whole day ________ in the aquarium. They forgot ________ back before ten o’clock.
He was walking along the street a car hit him suddenly.