Since to the world, the dance “Gangnam Style” has gained greart great popularity.
| A．introduced | B．introducing |
| C．being introduced | D．to be introduced |
The island, _____ to the mainland by a bridge, is easy to go to.
| A．joining | B．to join | C．joined | D．having joined |
Even the best writers sometimes find themselves _____ for words.
| A．lose | B．lost | C．to lose | D．having lost |
I ______ through that bitter period without your generous help.
| A．couldn’t have gone | B．didn’t go |
| C．wouldn’t go | D．hadn’t gone |
To get a better grade, you should ______ the notes again before the test.
| A．go over | B．get over |
| C．turn over | D．take over |
Sometimes proper answers are not far to seek ______ food safety problems.
| A．in | B．to | C．on | D．after |