--I’m sorry I ______ my exercise book at home.---Don’t forget _______ it to school tomorrow, please.
—What ______ you ______?—I _______ the dishes.
—What's Mary doing?—_______.
My friend pal and I often talk _______.
—Is your brother _______ TV?—No,he's _______ a book.
Listen,the girls ____ an English song.