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A : Did Tika play the piano well at the concert last night?

B : She made me disappointed, early. "She should have practiced more seriously."
The underlined words mean ...
A. she has to practice more seriously next time
B. she has practiced more seriously
C. she practiced more seriously before
D. she didn't practice seriously before
E. she didn't practice more seriously

Discuss
She should have practiced more seriously. This sentence uses Past Future Perfect Tense so it means Simple Past Tense in negative form.

Answer : D