---Must I water the flowers right now?
---No, you ________ . You may do it after supper.
A. mustn't B. needn't C. can't
— in the backpack? -No, they aren’t.
| A．What’s | B．Where’s |
| C．Are they | D．Is it |
—Is this your ruler?
—Yes, it’s ________
| A．my | B．mine | C．hers | D．his. |
-______? -No, it’s on the sofa.
| A．Is the ruler in your pencil case |
| B．Where is your ruler |
| C．What color is your backpack |
| D．Is this your ruler |
— Is this a pen?
— .
| A．Yes, this is | B．Yes, it is |
| C．No, this isn’t | D．No, it is |
—?
—It’s my ID card.
| A．Is it your ID card | B．Who is that |
| C．What’s that | D．Where is your ID card |