In the old days, his father was not able to earn enough money to ______ his family. 

Three years ago，a society was set up to________the endangered animal and plant life from dying out in this area.

Malaysian Prime Minister announced on Monday that the missing Malaysia Airlines MH370 ended in the Southern Indian Ocean, but many said it lacked _____ evidence.

Only after he was brought to the police station did the young man ________ he had stolen some purses from other passengers.

 Alex has been in China for quite a few years. ________， he speaks fluent Chinese.