I smell something __________ in the kitchen. Can I call you back in a minute?
| A．burning | B．burnt | C．being burnt | D．to be burnt |
When____, the museum will be open to the public next year.
| A．completing | B．completed | C．being completed | D．to be completed |
_____ the ladder, get someone to hold it.
| A．When climbed | B．When to climb |
| C．When climbing | D．When one climbs |
Don't leave your work half _____.
| A．being done | B．doing | C．to do | D．done |
Any student,who is thougnt ______ the rules, for example, by cheating, has _____ before a student court.
| A．to have broken; to appear | B．to break; to get |
| C．broken; taken | D．to break; to be taken |
Prices of daily goods _____ through a computer can be lower than store prices.
| A．buying | B．bought | C．are bought | D．been bought |