Try to sing more Korean songs, and you will find it interesting ______ a foreign language.
Our English teacher is_______ the classroom.She is writing on the blackboard.
_________ boys are there in our class?
There _____ a pen, two pencils on the desk.
—Lily, here are your pens. Please _____.—OK, Mom.
I don’t like physics ______ it’s too difficult for me.