-Someone’s knocking at the door. Is it your mother?-No, dad. It _____be mom. I saw mom ____in the bedroom just now.
We must learn how these “problems” “challenges”.
— do you study for a test? —I study_______ working with a group .
The writer had trouble complete sentences
It looks like rain, doesn’t it?--- _______.
Lin Fen _____a lot in the last few years.