I didn’t hear anyone knocking at the door because I _______ to music in my room.
There _________ an apple on the desk.
The student is too young. He can’t look after himself _______.
—Do you have _______ to say today? —No, nothing.
—What are these? —They’re _______ and _______.
—What were you doing at this time yesterday? —We _______ in the classroom.