Are you _________ your classmates well?

Areyou_________yourclassmateswell?

Youshouldtrytowrite__________evenwhenyou’rebusy.Asyouknow,practicemakesperfect.

Thenumberoftallbuildings__________greatlyinTianjininthelastfewyears.

__________of the land in that district __________ covered with trees and grass.