The sentence "It is dramatic increase to 56" is improper because it's not clear what the subject is and it appears to be missing some words. A better sentence is "It has increased dramatically to 56".
Nothing is wrong with that
Nothing is wrong with that
there is nothing wrong with this sentence
You can use the transitive verb "wrong" in a sentence by following it with an object. For example, "He wronged me by spreading false rumors." In this sentence, "me" is the object that was affected by the action of being wronged.
It is written in the passive voice
The sentence is grammatically incorrect. It should be structured as "Taking a psychology test," with the subject preceding the action.
The sentence given is not technically wrong, but it is not idiomatic: Most English speakers prefer gerundive rather than infinite constructions in such sentence and would reword the sentence to read, "You regret having taken the dog on holiday with you."
Although the spelling may be wrong in places, the sentence is true.
The sentence should be corrected to say "I have been a secretary for five years" to properly convey the duration of time the person has been in that role.
"That was wrong" is a grammatically correct sentence.
There is nothing wrong with that sentence.
Decides (present tense) should be decided (past tense).