We should do everything we can the environment .A. to protect B. protect C. protecting
--- Can you tell me why you learn English so well?--- It’s very simple. ______ you study, _______ grades you will get.
The baby is always crying. He _______ be hungry.
My parents are patient _________ me.
The words are too difficult. I must ______.
I like English. Tome likes it_______.