-You’re dropped __________ “s” in the word “across”.-Oh, you are right, __________ letter “s” should be doubled like this “cross”.
—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?