1. (2010·重庆高考)The book has been translated into thirty languages since it _______on the market in 1973.
A. had come B. has come
C. came D. comes
2. (2010·全国卷Ⅰ)—Have you finished reading Jane Eyre?
—No, I _______ my homework all day yesterday.
A. was doing B. would do
C. had done D. do
