In order to make Dandong more beautiful, more trees and flowers ________ every year.

Listening to loud music at rock concerts__________caused hearing loss in some teenagers

I haven’t heard_____ her for a long time since the last letter but I did hear _____her through my friend

Tim,how do your parents like pop music—___________ my dad ___________ my mom likes it.They both prefer classical music.

Historically, ________ main material for making tables has been wood, but ________ metal and stone have also been used.