--- Will you please answer the door? It _______ be your sister.
---Sorry, I ________. I'm feeding the rabbit.
| A．must；mustn’t | B．will；can’t |
| C．may；can’t | D．must；needn’t |
—Can you ride a horse, Mike?
—No, I ______.
| A．can’t | B．may not | C．mustn’t | D．needn’t |
They usually go to see their grandparents ______ Sundays.
| A．of | B．in | C．on | D．at |
— Is this book yours?
—No, it’s not ______. It’s Betty’s.
| A．I | B．me | C．my | D．mine |
I ______ you a copy of the report as soon as I finish it.
| A．send | B．sent | C．will send | D．has sent |
— ______ are your parents?
— They’re very well. Thanks.
| A．How | B．Who | C．What | D．Where |