By the time I got to the bus stop, the bus .A、has already left B、already left C、had already left
—Tom, you shouldn’t be so ____________. You always leave your things here and there. —Sorry, Mom. I’ll put them away soon.
During the rainy days, I prefer to stay at home ___________ go out.
John ___________ on his friend when he went to Guangzhou last month.
—Paper ___________ wood. We should not waste paper. —I agree. I always use __________ sides of paper.
Are you familiar _____________ the rules of baseball?