Verification of Truth of the statement Questions

They watch no movie during the working days, but in holidays they watch one movie.

is correctly written among the given options.

The second would employ a comma, or semi-colon, and not a colon so it is not properly punctuated.

The third sentence would not be correct because it uses 'like', usually used for comparison. Since you are not comparing two questions, it would not be appropriate.

The fourth sentence has 'is' before the colon, which is a implies declaration and not listing. So, again, it would not be appropriate.

Hence, the first sentence, however, is punctuated correctly.

The correct punctuated sentence is A

The conference was only supposed to be an hour; however, it ran for nearly two and half hours.