Surely not that difficult

[jib]

Test No. incompl/elem-15 "An Easy Question", question 5

Oh, come on it's ......... not that difficult.

(a) quickly
(b) hardly
(c) always
(d) surely

Test No. incompl/elem-15 "An Easy Question", answer 5

Oh, come on it's surely not that difficult.

Correct answer: (d) surely

Your answer was: incorrect
Oh, come on it's quickly not that difficult.
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I do not understant this answer, please explain me.

[Torsten]

Well, one person, let's call her Jane, asks another one (let's him Mike) a question.
Mike says that he has to think about Jane's question first because it is difficult to understand.
Jane replies, that no the question is not difficult, it's easy. Because she is convinced that her question is easy to answer she says the question surely (certainly) is easy.
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Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary

[Bruno]

I just would like to congratulate on your job here, it is amazing, it is exactly I was looking for because my english need being improved as you can see or not hehe I just don't know if my english is correct and this web is helping me a lot.

sincerely thank for this

[Guest]

I chose hardly for its answer, but it wasn't right. Don't you think hardly sounds right to the ears than surely? Just a question. Thanks for your answer.

[Torsten]

As you know hardly is incorrect here because it means almost not so this would conflict with what the speaker actually wants to say.
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Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary

[Monalisa2604]

But if I want to say that sometimes it's difficult but sometimes it's not, can I say: Oh, come on it's always not that difficult?

[Torsten]

In that case, I would say "It's not always that difficult".
_________________
Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary

[ZZayaZZ]

Could you explane what does the word "that" mean in this sentence?
May I say "Oh, come on it's surely not difficult."