Mrs Smith lives next to us. She is really a good _______, because she always helps us.
Why did you get up so early ___ this morning.
The Eiffel Tower __________ for the 1889 Paris Expo. It is a symbol of the city now.
Could you please tell me ___________?
---How far is your home to your school? ---It _________ me about twenty minutes by bus.
---Where is your father? ---He isn’t here. He __________ Yushu to help the people in trouble.