Mary went to the box office at lunch time, but all the tickets ____out.
| A．would sell | B．had sold | C．have sold | D．was selling |
Without good instructions of the teacher, you will be likely to________ a lot of bad habits while you are practicing the piano.
| A．pull up | B．take up |
C．pic k up |
D．bring up |
The work is not very profitable _______ cash, but I am getting valuable experience from it.
| A．in favor of | B．in terms of |
| C．in charge of | D．in case of |
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 |
I don’t think he will make a superstar like Cristiano Ronaldo. He just lacksit takes to be a professional soccer player.
| A．Which | B．that | C．what | D．who |
It is______ that he has been addicted to the drugs and has difficulty quitting it.
| A．obviously | B．apparently | C．possibly | D．likely |