I'm writing a formal report. Which one of the following sentences is better.
There are some problems which take too much time to get their solutions.
There are some problems which take too much time until get their solutions.
I have the the following sense about using "to" in a sentence. Please tell me, is it correct?
"To" is used to demonstrate, subject of the sentence is going to do a rather difficult / big / noticeable work. For example, consider the following sentences.
Please try to call me. (Here, process of calling seems to be too hard)
Please try call me. (here, it seems to be an ordinary work)
If this statement is correct, does it apply to the first real sentence? ("There some problems ...")