---It’s said that scientists are working hard to ________ a way to deal with H7N9 avian influenza(H7N9禽流感)---Really? That’s great!
---___________ ? ---It’s cloudy.
Next weekend we will play ____ Class 2.
John often teaches physics in his free time.
The doctor told me to eat more _______ because it's good for my health.
After two ____ work, Tom was too tried to move.