—What? You failed the driving test again!
— ?
| A．So what | B．How come |
| C．Why not | D．What for |
In the office an electrical engineer is looking through the instructions to know ________ the heat system works before the repair work.
| A．whether | B．why |
| C．how | D．that |
Energy, passion and a burning desire are, you see, ________ true learning takes.
| A．that | B．what |
| C．how | D．which |
________ is the most important for him is not his job, but his family.
| A．It | B．As |
| C．What | D．That |
Mary is a humorous and warmhearted woman and that is ________ she is a most popular person in her community.
| A．whether | B．because |
| C．how | D．why |
The organizers promise ________ wins the first prize a chance to go abroad.
| A．who | B．whom |
| C．whoever | D．whomever |