We have ______ English class _______ Monday morning.
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. — ________.