The man_____your good friend will try my best to help you out.[ ]

I shared the apple ______ my brother. [ ]

What would you like to do this Sunday?—–If it doesn’t rain, I _______to Mount Qingyun for a spring field trip.

He made another wonderful discovery, __________ of great importance to science.

He ran the 100 meters in 9.91 seconds, and I have not seen _________ this year.