Li Ming goes to school ______7:20 ______ the morning.[ ]

Don’t litter the ground, boy. Look at the sign, “Rubbish must be thrown into the dustbin.”—Sorry, I’ll __________ right now.

Yesterday I had a word with the CEO of the company, ___ who used to teach at Beijing University．

I think this bike belongs our teacher. She likes red bikes.

My brother is a basketball player. —And he usually_____ very hard on the playground.