The box was too heavy for me to carry, ___I pulled it into my room.
—Which is the biggest number of the four?— .
His father and mother often argue _______ what TV programmes _________.
---Can I get you a cup of coffee? ---_____________.
---It was ___________ who helped us out of danger.---What brave and helpful children! We should learn from them.
--- Do you mind telling us something about this area?--- Not at all. ________ of the land in this area _________ covered with trees and grass.