D
C
💯💯

D is correct

One of the vice………….. in an interim capacity.
(a) President acts
(b) President act
(c) President acted
(d) Presidents acts

D is correct 💯💯

RULE 6:
When adjectives like: rich, poor, helpless, blind, young, privileged, handicapped etc are used in a sentence with the definite article coming before them, they take the plural verb.
For example:

The rich deserve respect
The poor live in misery

The helpless……………… our sympathy. (a) Require (b) requires (c) does require (d) do requires.

Rule 7:
when the phrase "a number of" is used in a sentence, it is usually followed by a plural verb while the phrase "the number of" is followed by a singular verb.

A number of students………. missed the opportunity to register. (a) is (b) has (c) have (d) do.

A
💯

C is correct

The police claim that a number of stolen cars…… recovered. a) has being (b) is being (c) has been (d) have been.

Are we still together guys?

Can we move on?

D is correct 🔥

Rule 8:
the expression "many a/an" is followed by singular noun and a singular verb.

Many a candidate ……. to realize the difference between written and spoken English. (a) fails (b) fail (c) have failed (d) are failing.
Many a man …….done without milk in…… tea these days. (a) had/their (b) has/his (c) have/their (d) had/his.

RULE 9:
when the expression more than is used as a subject of a sentence, the verb to be used is determined by the noun that comes after it. If the noun that comes after more than is singular, the verb will be singular and if plural, the verb will be plural too.
For examples:

More than two players were given a red card
More than one person has paid the levy

One more rule tonight guys and we will call it a night 🥲🥲

RULE 10: "Each" and "every" are followed by a singular noun and a singular verb.
For examples:

Each singer was given a prize
Every man loves women

However, "each of" and "every one of" is followed by a plural noun and a singular verb.

Each of the houses…… a new look (a) have got (b) have (c) has (d) were given