-When __________ you __________ this book? -About 3 years ago.A. do, wrote B. did, wrote C. did, writeD do write
— ______ in the yellow river? — There’s a nice boat.
—_____does your mother go for a walk? — Every afternoon.
—Is Sandy in Mr. Wu's office ? — Yes, she __________Mr. Wu __________her birthday party.
— How is your friend? — He is _______, and he is at school.
About _________ films are on show during the 5th Shanghai International Film Festival.