At last the determination and patience of the scientists _______in 1996 with a breakthrough -------- the cloning of Dolly the sheep.
| A．paid off | B．paid out | C．paid back | D．paid up |
—What bad luck! I had a cut in salary yesterday．
—____．I warned you not to be late again and again but you ignored it．
| A．You asked for it |
| B．Never mind |
| C．Take it easy |
| D．By all means |
The____of hanging clothes across the street is a common sight in many parts of the city．
| A．routine | B．procedure |
| C．reference | D．practice |
____people from all walks of life are working hard to create ____new Hefei．
| A．/; the | B．The; the |
| C．/; a | D．The; a |
----Fancy meeting you here, Lucy! I never thought you visit us today.
----Sorry, I forgot to tell you I was coming. I hope you don't mind me____.
| A．calling in | B．pulling in |
| C．breaking in | D．dropping in |
If you go to the wildlife park, you will find the places there more dangerous than commonly_ __.
| A．supposing | B．suppose | C．to suppose | D．supposed |