The young man, ______ several attempts to beat the world record in high jumping, decided to have another try.
| A．to make | B．making | C．made | D．having made |
—Lucy, read this book, I ____ that you’ll be fond of it.
—OK. I’ll read it after I have finished my homework.
| A．order | B．guarantee |
| C．prove | D．reveal |
The air is deadly polluted because some factories don't ________ the rules to protect the environment.
| A．appreciate | B．regard |
| C．honor | D．respect |
The visiting minister expressed his satisfaction with the talks, ______ that he had enjoyed his stay here.
| A．having added | B．to add |
| C．adding | D．added |
You should try not to get ________ in the trouble between them.
| A．lost | B．involved |
| C．absorbed | D．trapped |
Many countries are in great need of natural gas, wind and other forms of ________.
| A．power | B．source | C．energy | D．material |