He was always___burden to his parents
--I think our school’s selective courses are of great use and I have learnt a lot from them.--Yes _______.
I was born in New Orleans, Louisiana, a city _______ name will create a picture of beautiful trees and green grass in our mind.
_______ he was the last man I wanted to see, I did all that I could to help him.
I don’t think she noticed the headmaster just at that moment, for she _______ the game on her cellphone.
Thousands of people lined up to lay flowers in front of a 28-story high-rise in Shanghai, _______a terrible fire killed at least 58 people.