I don’t think the experiment is ______ failure. At least we have gained ______ experience for future success.
| A．不填；the | B．a; the | C．a ; 不填 | D．不填; 不填 |
—Can I pay the bill by check?
—Sorry, sir．But it is the management rules of our hotel that payment ____ be made in cash．
| A．shall | B．need | C．will | D．can |
What I want to know is ______ he likes the gift given by us.
| A．that | B．if | C．whether | D．不填 |
—Waiter!
—
—I can’t eat this. It’s too salty.
| A．Yes, sir? | B．What? | C．All right? | D．Pardon? |
The poet andpianist is going to give us a talk this afternoon.
| A．a | B．the | C．不填 | D．an |
We can never expect ____ bluer sky unless we create _____less polluted world.
| A．a; a | B．a; the | C．the; a | D．the; the |