Find the next two terms in the series

J, L, O, S, ?, ?

Enormous means very large in quantity or size or extent.

Antonym or opposite of enormous is little, small or tiny.

An infinitive is a verbal that can function as noun, adjective, or adverb.

Having or involving the basic form of a verb is called Infinnitive clause.

Way to know whether there is an infinitive is to see whether there is the word "to" in the sentence.

Hence, option B) It is normal to make mistakes. is an infinitive sentence.

It is said by Lord Polonius.

It means do not lend or borrow money from a friend, because if you do so, you will lose both your friend and your money. If you lend, he will avoid paying back, and if you borrow you will fall out of your savings, as you turn into a spendthrift, and face humiliation.

While using punctuations, only one space is used. 

Incorrectly is the only word which is spelled incorrectly in the dictionary.

A callous person is insensitive or emotionally hardened.

Hence, Callous is the opposite of Sympathetic, kind hearted, sensitive, nice,...