It is believed that a new kind of drug by the scientists and they are hopeful that they will succeed in a few months.
A. has been developed
B. is being developed
C. is developing
D. has developed
It is believed that a new kind of drug by the scientists and they are hopeful that they w
答案:2 悬赏:50 手机版
解决时间 2021-01-23 14:43
- 提问者网友：我一贱你就笑
- 2021-01-22 15:22
最佳答案
- 五星知识达人网友：渡鹤影
- 2021-01-22 16:00
A. has been developed(答案→)B. is being developedC. is developingD. has developed解析： 考查时态和语态。主语drug和动词develop是动宾关系，所以要用被动语态，排除C,D；根据they will succeed in a few months，可知还没有开发出来，所以不能用现在完成时态，选B，正在被开发。
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- 1楼网友：渡鹤影
- 2021-01-22 16:47
谢谢解答
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