—Is that your baseball?
—__________. That’s her baseball.
| A．Yes, it is. | B．No, it isn’t. |
| C．Yes, it isn’t. | D．No, it is. |
－Look, your sister is playing the piano over there.
－She ______ be my sister. She has gone to America.
| A．mustn’t | B．can’t | C．shouldn’t | D．may not |
It is polite ______ you to give seats to the elderly.
| A．with | B．for | C．of | D．to |
－Why are there a lot of dead fish in the river?
－Because they were ______ by the polluted water.
| A．caught | B．poisoned | C．burned | D．protected |
－ Thank you so much for the gift.
－_______.
| A．It’s not good | B．Don’t say so | C．I’m glad you like it | D．No, thanks |
_______ points you get, _______ levels you’ll go to.
| A．More; higher | B．The more; the higher | C．Much; high | D．The more; higher |