When an earthquake occurs, people must run to open ground or stay in safe areas like ______.

A．We are making too many vehicles.
B．We have more and more industry.
C．There are too many developing countries.
D．People use too many man-made materials.

A．She hasn’t cleaned her room either.
B．She left her room on time this morning.
C．She can help the man clean up his room.
D．She doesn’t know the mess the man have made in her room.