Improve the bracketed part of the sentence.

The naughty boy made (many a mischief).

 

One who sacrifices his life for a cause is called as Martyr.

Ominous is the correctly spelt word in the given options. It means that giving the worrying impression that something bad is going to happen.

Without a word in it, it can't be called as song.

A conjunction is a word that joins words, clauses, phrases or sentences.

For example but, and, or, nor, yet for, so, although, since, because, unless, when, where, while, etc.

There are four types of conjunctions:

1. Subordinating Conjunction

2. Correlative Conjunction

3. Phrasal Conjunction

4. Coordinating Conjunction

In the given sentence, "She is not only a great singer but also an exceptional dancer" Not Only But Also is a type of Correlative conjunction.

Wellness is a continuum which means personal wellness can vary between very poor and very good.

Variable means changes or shifts timely. Hence, synonym of variable is shifting.

A complex sentence is a sentence that contains an independent clause and one or more dependent clauses.

If two clauses are connected with a coordinating conjunction, it's a compound sentence.

If two clauses are connected with a subordinating conjunction, it's a complex sentence.