—Do you have a ruler? —Yes, but a short _____.A. it B. ones C. One
I have __ ___ decided when to leave, but my sister hasn’t decided__ ___.
—Do you know __ ___?— Sorry, I don’t. But I saw her just now.
—Are you worried about the coming exam?—No, I think the more ________ you study, ________ mistakes you’ll make.
— ________ have you learned to play the piano?— ________ five years ago.
—I'm going to visit Yellow Mountain with my family this weekend.— ________.