Some of this heat near the earth’s surface _________ make electricity.
| A．is used for | B．is used to |
| C．gets used to | D．used to |
Whenever I made mistakes，the teacher pointed them out with ________.
| A．curiosity | B．satisfaction |
| C．envy | D．Patience |
Carl is studying ________ food science at college and hopes to open up _______meat processing factory of his own one day.
| A．/；a | B．/；the |
| C．the；a | D．the；the |
Korean culture is really popular right now. The Korean Wave is ______ Asian countries including China.
| A．sweeping | B．striking |
| C．appplying | D．Experiencing |
She lost her temper, ______ I decided to go back home.
| A．in this case | B．in which occasion |
| C．at which point | D．in the event |
Had they known what was coming next, they _____ second thoughts.
| A．may have | B．must have had |
| C．could have | D．might have had |