if you want to ask politely someone for more clarification, you should say
c - Could you repeat that
2- When Americans are not enthusiastic, their voices’ intonation usually…
b - Doesn’t go up
3 - In English, when you want to respond to a negative question or statement with intonation that goes up at the end such as “you don’t have ONE? You should say …
a - No, I don’t
4 - What is the superlative of "unpleasant"?
c - more unpleasant
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