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You______the experiment twice, not once.A、should have carried outB、shouldn’t ha
You______the experiment twice, not once.A、should have carried outB、shouldn’t ha
游客
2025-03-22
21
管理
问题
You______the experiment twice, not once.
选项
A、should have carried out
B、shouldn’t have carried out
C、haven’t carried out
D、couldn’t have carried out
答案
A
解析
“should+不定式完成式”表示“本应该做而实际没有做”的虚拟语气含义。
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