---John, my computer doesn’t work. --- Why not ask Mr. Liu __________ it?A. checking B. to check C. to buy
—Whose (谁的) hat is this? —I think it's _______.
---Are there any ________ on the farm? ---Yes, there are some。
---What are________ teachers doing?---They are having a meeting.
Here ______ two photos of my family.
Here is a photo ______ your family.