"For one or two hours"

[Rachel Adams]

Can "for" be omitted before "one"?

"I think you are tired and nervous. You have to go to sleep. Just one or two hours. Sometimes problems are solved by themselves. Don't worry."

The rest of the text I provided for context.

 

[5jj]

You have omitted it.

It's OK.

 

[Rachel Adams]

You have omitted it.

It's OK.

I can't find "problems are solved by themselves" which I have just googled. I found "problems solve themselves." Is my version also correct?

 

[Yankee]

Yes.

 

[Rachel Adams]

Yes.

Do you mean this is correct "problems are solved by themselves" as well as "problems solve themselves"?

 

[Phaedrus]

Do you mean this is correct "problems are solved by themselves" as well as "problems solve themselves"?

"Sometimes problems are solved by themselves" is the passive of "Sometimes problems solve themselves."

 

[Yankee]

Do you mean this is correct "problems are solved by themselves" as well as "problems solve themselves"?

Yes.

 

[Yankee]

Do you mean this is correct "problems are solved by themselves" as well as "problems solve themselves"?

Both are OK along with "Problems can solve themselves". But I would precede any of those with "some....."