______(Dog)dog is ______ useful animal.
| A．a, an | B．a, the | C．the, a | D．the, / |
Mary is an honest girl; I say it, ________I don't like her.
| A．even though | B．as if | C．as long as | D．as though |
I prefer to buy a new TV rather than ________ it.
| A．repair | B．to repair | C．repairing | D．to repairing |
He doesn't know_________ the work by himself.
| A．whether can he finish | B．whether he could finish |
| C．whether can how finish | D．whether he can finish |
Oh, boy, why are you killing your time this way? Can’t you find something ________ doing?
| A．useful | B．deserve | C．valuable | D．worth |
—Which of the two pens are you going to buy?
—I’ll buy _____of them, so I can give one to my friend.
| A．all | B．neither | C．every one | D．both |