I’d like you to tell me something about Shennongjia. -I’m sorry, but neither Jack nor I ________ there.

The environment is becoming worse and worse. I think we should do something to ____ people ____ cutting the trees in order to protect the earth.

I was still sleeping when the fire ___________, and then it spread quickly.

She_______ a new idea for reducing pollution.

．It will be about three years________next Olympic Games are held.