. He full marks, but he was so careless as to make a spelling mistake.
A. must have gained
B. can have gained
C. could have gained
D. must gain
. He full marks, but he was so careless as to make a spelling mistake.A. must have gained
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解决时间 2021-12-23 15:37
- 提问者网友：聂風
- 2021-12-23 02:02
最佳答案
- 五星知识达人网友：行雁书
- 2021-12-23 03:00
A. must have gainedB. can have gained(答案→)C. could have gainedD. must gain解析：考查情态动词及虚拟语气。could have done本可能做某事而实际上没有做，句意：他本可以得满分的，但是他是如此的粗心以至于犯了一个拼写错误。所以选C。
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- 1楼网友：旧脸谱
- 2021-12-23 04:16
谢谢解答
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