--Dad, I’ve got an "A" in the math exam. --Great. And I’m sure you will do better, because this is a good_______.
---What are________ teachers doing?---They are having a meeting.
Here ______ two photos of my family.
Here is a photo ______ your family.
These _______ his brothers and that__________ his sister.
Please help Jack ________ his bike. It's missing (不见了).