What’s the woman with a ponytail like—— She doesn’t talk much. ___ .

Frequent smoggy weather has set the alarm ringing; by no means can we develop economy _____ the environment.

Are your family ready for rafting?—Yes, I really want my children to experience thatthey are young

Every day, too much water _______ in our school. We should save it.

Mary 1ooks down today．What is up？—Well，_________happened between Mary and me is none of your business．