（题文） you start eating in a healthier way, weight control will become much easier.
A. Unless B. Although
C. Before D. Once
（题文）As teenagers, sometimes we do need our parents’ guidance, especially______social experiences.
A. by way of B. as a result of
C. in place of D. in terms of
A good many things in the world cannot be considered and valued _______money.
A. in terms of B. in short of
C. in charge of D. in case of
— Hi, Jack, you look so tired.
—I’m tired. I the kitchen all day.
A. painted B. had painted
C. have been painting D. was painting
（2015·浙江）Albert Einstein was born in 1879. As a child, few people guessed that he a famous scientist whose theories would change the world.
A. has been B. had been
C. was going to be D. was
________ you’ve heard the song, you’ll never forget it.
A. At once B. Once more
C. Once upon a time D. Once
