The leader is losing ground as the rest of the runners _____

____ the young people keep learning it, they can pass on Dai culture from generation to generation

To keep healthy,Professor Johnson ________ cycling as a regular form of exercise after he retired.[ ]

I’m allowed to go out with my friends on Fridaynights.— ________________.

Are you going to Guilin byplane—It’s fast but expensive, so I’mnot sure. I __________ take a train.