—English is _________ difficult subject. I even want to drop it.—You’d better not. I’ll help you _______it.
I don’t remember _______ the book yesterday.
_______ useful information it is!
She is a _______ girl and she always says to her teachers _______.
The math problem is _______ hard for me ______ work out.
----How do you learn English, Toby? ---I often practice English _____ talking _____ my American friends.