—Do you mind if I play the piano? —______. My baby is sleeping.
A. Don’t do that
B. You’d better not
C. Yes, I do
—What’s your favorite ________?
—Summer. Because I can swim in rivers.
| A．season | B．subject | C．music | D．sport |
David usually takes _______ walk for an hour after dinner.
| A． a | B． an | C． the | D．/ |
The population of the world still now.
| A．will; grow | B． has; grown | C．is; growing | D．is; grown |
— Excuse me. Is the library open all day?
—. Only from 8 a.m. to 4 p.m..
| A．Yes, of course | B．That's right | C．Sorry, I'm not sure | D．Sorry, I'm afraid not |
Keep off the drugs（毒品）, you and your family will be in great danger?
| A．and | B．or | C．but | D．so |