b. Everyone knows that we now have better medical facilities in the city.
c. You cannot get such an attractive package anywhere else.
d. Man is a wonderful piece of work.
Explanation:
Sentences can undergo a transformation from one form to another. The different forms include assertive, affirmative, negative, exclamatory, and interrogatory.
An affirmative sentence is a sentence that confirms a fact.
An assertive sentence is a statement of fact that is communicated in a confident manner.
An interrogative sentence is a question about something.
Exclamatory sentences are conveyed with a sign of urgency. They are usually ended with exclamatory marks.
informal is; of or denoting a style of writing or conversational speech characterized by simple grammatical structures, familiar vocabulary, and use of idioms, e.g., too in French.