It’s hard to _________ a girl with only one arm can play ping-pong so well. — Yes, she is great.

This girl is ready to help people any time. When she is on the bus, she always her seat to someone in need.

He was stopped by the rain the trees.[ ]

My best friend sits next_____ me. [ ]

A number of birdwatchers ______in Zhalong Nature Reserve. The number of them____500.