— May I use your dictionary, Tim? — Sorry, I it to my classmate last week.
At the party, she ________a ghost.
He found_ ________very difficult ________the math problem.
— What did Tina say? — Sorry, I didn’t ________ what she said.
—Do you know _____ ? I'm going to see him. —Sorry, I don't know.
I often make mistakes ___________ grammar..