The chairman declared that ________ player scores the highest number of points would be the winner.

I admire those people, _____ having little money, they feel happy and satisfied.[ ]

He had collected plenty of historical evidence, proved that humans used to have different sleeping patterns.

“It’s a secret….” he lowered his voice and whisperedno one could overhear it

____ the help of the teacher, the student who wasn’t good at math ____ the difficult problem quickly.