Need some help please on these.

[bignelsonbunch]

Either the interviewer or the committee members usually begins by asking simple questions about your background.

Each of the instructors are attending the conference next weekend.

Can you tell me how to fix the Subject-Verb Agreement on above?

Have you guessed the identity of the person to who I am speaking?

Pedro Martinez signed a baseball for Chad that he had used in a game.

Pronoun Case on the above?

Each member of the sorority has to make their own bed.

All students are urged to complete your registration on time.

Pronoun-Antecedent Agreement on the above?

In the late 1990s, the popularity of MTV’s The Real World sparked increasingly interest in this concept.

Of the two football players, Herman was the heaviest.

Adjectives and Adverbs on the above?

[MikeNewYork]

[quote=bignelsonbunch;123785]Either the interviewer or the committee members usually begins by asking simple questions about your background.

Each of the instructors are attending the conference next weekend.

Can you tell me how to fix the Subject-Verb Agreement on above? [/quote]

begin

With a compound subject connected by "or" take the verb number form the closest noun/pronoun. In this case it is the plural "members"

is

"Each" is a singular subject.

Have you guessed the identity of the person to who I am speaking?

Pedro Martinez signed a baseball for Chad that he had used in a game.

Pronoun Case on the above?

whom

The objective case of "who" is used as a prepositional object.

There is nothing wrong with the pronoun case in the second. The only problem is the placement of the relative clause.

Each member of the sorority has to make their own bed.

All students are urged to complete your registration on time.
Pronoun-Antecedent Agreement on the above?

her

In this case, the gender is known to be female.

their (registrations)

All students is plural and they are third persons.

In the late 1990s, the popularity of MTV’s The Real World sparked increasingly interest in this concept.

Of the two football players, Herman was the heaviest.

Adjectives and Adverbs on the above?

increasing

This has to be an adjective to modify "interest", not an adverb.

heavier

With two people, you need a comparative, not a superlative.