Mrs. Obama introduced the Let’s Move _______ yesterday. Its goal is to reduce children obesity(肥胖) today and in the future.
Taking regular exercise and eating a balanced diet are two important keys ________ good health.
The Boston Marathon bombings killed 3 people, including a Chinese citizen ________ Shenyang.
The art show was ______ being a failure; it was a great success.
—How amazing it is that astronauts are exploring outer space! —It's a challenge, I guess, ______ man against nature.
Everybody was touched ______ words after they heard her moving story.