He found _________ to sleep.
| A．difficult to get | B．it difficult getting |
| C．it difficult to get | D．that difficult to get |
I’d like to eat these candies. They taste _________.
| A．salty | B． good | C．well | D．terrible |
—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 |