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watch out and u drop it
2.the only thing that it did was confusing me/....was confuse me??
3.how safer is it?/how much safer is it?
4.how much smarter is him

thanks
+0
I'd also say that smart and smarter are US dialect; in the UK we wouldnt use that word, we'd say more intelligent or brighter
Comments  
CORRECTIONS:
1. Watch out and you drop it.
2. The only thing that it did was confuse me.
3.How much safer is it?
4.How much smarter is he?

you're welcome.

A Texan
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in the second one shouldn't it be "was confusing me" there is a verb before confuse
A quick comment..

Shouldn't you have to put comma before (and) in No.1 because you are connecting two indepentent sentences.

No. 3 and No. 4
how save is it? How smart is he? is more appropritate for standalone questions.
safer/ smater (comparison) you have to show two subjects in the sentences..Right???

How much safer is it than something else?
How much smarter is he than someone else?

I am not sure about No.3 and No.4....If someone who know for sure..pls help.
 suzi's reply was promoted to an answer.
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and what about "what i did was confusing me"why i have to put confuse,if i have a verb preceding another verb