—Listen! There is a knock on the door. Who _____ it be?—It must be Jack. Just now I sent for him.
Tom’s mother angrily told him ________ games on the Internet.
He has a good command ________ maths and plays an important part ________ our team.
She’s the student ________ handwriting is the best in my class.
I said hello to her with a smile in the yard, but she ________ me.
Before the earthquake, mice ran out of the fields ________ for places to hide.