-- Could you tell me something about the boy who helped you just now? -- Sorry, I know nothing about him. We are______.
The big flood last week affected (影响) _______ people’s lives, and _______ them died.
All the _______ things need air and water. Without air or water, nothing can stay _______.
I don’t know if I _______ free tomorrow. If I _______, I will go to the bookstore.
Someone is knocking at the door. It _______ my mother. It’s time for her to be back.
The floor is so wet. Let’s _______.