---Let me help you carry the box.---No, thanks. It’s big, __________ there is nothing in it.
I don’t know _____ next.
—Do you like the shirt?—Yes, it ____ very soft.
When I was young, my father told me__________.
—Peter looks sporty.—Yes. He is the ______runner in my class.
We won’t go sightseeing if ____ tomorrow.