[General] I wasn't sure just guess.

[Silverobama]

Hi.

I joined an online English-learning group. The host asks question every day. Yesterday she asked one and I was the only one who told the correct answer. Others were a bit surprised how I knew the answer. I actually didn't know but I guessed. So, I said to them "I wasn't sure just guess".

I wonder if it's natural.

 

[tedmc]

That would be understood but is ungrammatical.
Gave the answer, not told the answer.

 

[Tarheel]

You could say:

I wasn't sure. I just guessed.

Or:

It was a lucky guess.

 

[Yankee]

Hi.

I joined an online English-learning group. The host asks a question every day. Yesterday, she asked one and I was the only one who [STRIKE]told[/STRIKE] gave the correct answer. Others in the group were a bit surprised how I knew the answer. I actually didn't know it, but I guessed. So, I said to them "I wasn't sure, just a guess".

I wonder if it's natural.

Suggestions.

 

[GoesStation]

The others were a bit surprised that you knew the answer.

 

[emsr2d2]

The others were a bit surprised that you knew the answer.

Or (in BrE, at least), "The others were a bit surprised you knew the answer". In that sentence, "that" can be omitted.

 

[GoesStation]

Or (in BrE, at least), "The others were a bit surprised you knew the answer". In that sentence, "that" can be omitted.

That works in American English, too.