---________ have you played the piano? ---For four years. A How often B How long C How much D How many
—_____ do you _____ the book? —It’s very interesting.
Mrs. White _____ her wallet now, but she can’t ______ it.
Tom often _____ TV on Saturday evenings, but now he _____ stories.
—_____ do you like science? —Because it’s interesting.
—You must _____ a letter to your mother tomorrow. —Well, I will, Dad.