—I’m worried about tomorrow’s math exam.— ______ . I’m sure you will make it.
Tony’s father is a famous writer and he ______ a novel several months ago.
—Would you like to come to my birthday party ?—Oh, thank you. I'd .
—What can I do for you?—I’m looking at that dress. May I ?
—_______ did you stay in America?— For about two weeks.
—Excuse me. Are these ______ blue shoes?—No, they aren’t. are black.