The classroom is so dirty that it needs________ badly.
| A．clean | B．to clean | C．being cleaned | D．cleaning |
相关试题
The box ____ two meters by two meters and ____ a ton.
| A．measures; is weighed | B．is measured; is weighed |
| C．is measured; weighs | D．measures; weighs |
It never occurred to humans until the mid-1990s ______ some animals can be cloned.
| A．where | B．that | C．when | D．what |
---You look unhappy. Did you fail the tests?
--- I ______ the written papers but didn’t pass the oral examination.
| A．went through | B．went over | C．got over | D．got through |
I’ll prepare more dishes_________ your guests decide to stay for dinner．
| A．in case | B．in order that | C．even if | D．as if |
tion was built . 
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