Kelly: Thanks a lot. Elva: ____________. (A) No problem. (B) That's OK. (C) I'm sorry. (D) Any questions?

Which do you think is the correct choice?
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Waiting first for your choiceEmotion: smile
"I am sorry" is definitely the best Emotion: wink
Students: Are you brave enough to let our tutors analyse your pronunciation?
The given answer is A, but I think C is also correct.
TeoThe given answer is A, but I think C is also correct.
Expressing the feeling of sadness when someone thanks you is uncommon and strange, but the choice A is very common in USA.
Sorry, I mad a serious typo. I think B, not C, is correct.
Students: We have free audio pronunciation exercises.
Before answering the question, you must consider the tone of voice used when you say "Thanks a lot."

Is it used in an agressive voice? Then (C) would be a good choice.

Is it used in an appreciative voice? Then (A) would be a good choice. Then (D) could be followed after that but not always. It would depend on the individual answering the question.

But typically in the USA, most would say "You're welcome" and leave it at that. The replies to that statement could almost be endless.
I could construct a scenario for each of these to make sense. If the first person was being sarcastic and actually expressing anger, then "I'm sorry" would be okay. But of the choices, the regrettable "no problem" is the best choice. Actually, "that's okay" is the hardest one to make a scenario for.

(Whatever happened to "You're welcome" as a response to "thank you"?)
There are various ways of thanking people. Here are the most common:

Thank you.

Thank you very/ so much

Thank you ever so much – more emphatic; informal

Thank you very much indeed – emphatic and formal


Thanks a lot/ awfully

Many thanks. – rather formal

I don’t know how to thank you.

I can never thank you enough

I’m very grateful (to you)

That’s/ It’s very/ awfully kind of you. - formal, semi-formal

How kind of you.

(I’m) much obliged (to you) – used mainly by shop assistants

Possible replies are:

Not at all.

You’re welcome

(Oh,) that’s all right

(Oh,) that’s OK - casual, informal

Don’t mention it. - more emphatic, rather formal

It’s nothing. – informal, semi-formal

Think nothing of it. – informal, casual

It’s a pleasure. – only for things involving some time and trouble

I’m glad you enjoyed it.

I’m glad you were able to come.

Thank you for coming.

I’m glad you like it.

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