If human beings had been a bit less greedy and cruel, more birds and animals _____dying out.

--- Who told you my address ? --- I don’t remember clearly. It _____ Li Mei.　 ---It _____ Li Mei. She doesn’t know it.

 If only I _______ your praise then! For, you see, I lost heart and gave up.

— Tom is never late for work. Why is he absent today ?— Something _______ to him. 

My mother ________ always wave goodbye to me while I was leaving for school.