25. I ______ have been more than six years old when the accident happened.
| A．shouldn’t | B．couldn’t | C．mustn’t | D．needn’t |
相关试题
Lack of money led the company to a situation _____ they had to decide whether they should keep on with their production.
| A．when | B．where | C．that | D．which |
. _____ by the advances in technology, many farmers have set up wind farms on their land.
| A．Being encouraged | B．Encouraging |
| C．Encouraged | D．Having encouraged |
_____ the police thought he was the most likely one, they could not arrest him since they had no exact proof about it. 
| A．Although | B．As long as | C．If only | D．As soon as |
The wild flowers looked like a soft orange blanket _____ the desert. 
| A．to cover | B．covered | C．cover | D．covering |
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