Tipping is neither encouraged nor common, although visitors may reward special services if they wish, _________ 10% of the bill is enough.
A which B where C in which D in which case
—May I remind you that a Mr. Wang is waiting outside, sir?
—Oh, that’s right. I about it.
| A．forget | B．had forgotten | C．forgot | D．have forgotten |
—Did you enjoy your holiday?
—Yes, it’s the best holiday I these years.
| A．had | B．have had | C．had had | D．would have |
Just look at the room. My roommate ____ up his clothes.
| A．is never hanging | B．will never hang | C．never hangs | D．never hanged |
I ____ to send him a telegram to congratulate him on his marriage, but I ____ it.
| A．hoped, hadn’t managed | B．has hoped, didn’t manage |
| C．hope, don’t manage | D．had hoped, didn’t manage |
—It’s a long time since we met last. Haven’t you graduated from college yet?
—_____. I ______ English for four years in Nanjing University.
| A．No, study | B．Yes, have studied | C．No, am studying | D．Yes, studied |