posted by Leslie .
Correct the punctuation by inserting periods, commas, and apostrophes where and if appropriate.
1. We tested his hearing with whistles bells and horns.
We tested his hearing with whistles, bells, and horns.
2. The serial 7's revealed in my opinion evidence of abnormalities
The serial 7s revealed in my opinion, evidence of abnormalities.
* If you use capital letters or numbers, you do not need to use apostrophes.
not 100% sure where the comma should go
1 is correct.
2 would be better written like this: In my opinion, the serial 7s revealed evidence of abnormalities.
If you have to keep #2 pretty much as is, though, then put commas before and after "in my opinion."