The students have done something wrong that why they are punished by the teacher. The possible choices are A and C in the second blank. The right choice is C as there must be an adverb following a verb.
A misnomer is a term which suggests an interpretation that is known to be untrue. A moniker (or monicker) is a pseudonym which one gives to oneself. A bellwether is any entity in a given arena that serves to create or influence trends or to presage future happenings. A malapropism is the incorrect use of a word by substituting a similar-sounding word with different meaning usually with comic effect. The year 2000 indicates the millinum and it cab a misnomer. Therefore the right choice is A.
Until this sentence implies a shift in that belief that there was an innocuous (harmless) level of pollution at the point that it was challenged by authority.
