Not only Pinki but also her friends _________ buying books.

• is
• has
• have
• are
Correct Option: D  [ are ]

Remark:

The Moon _______ around the Earth

• move
• moving
• moved
• moves
Correct Option: D  [ moves ]

Remark: Subject is "Moon" a Singular noun, go with singular verb.
When universal truths are mentioned, the verb used should be the simple present tense.

Neither of the two stores _________ open.

• are
• is
• has
• have
Correct Option: B  [ is ]

Remark: Sentence begins with "neither" or "either" without the "or/nor" combination, the verb is singular.

The horse and the coach ________ arrived.

• have
• have been
• would
• has
Correct Option: A  [ have ]

Remark: When two singular nouns joined by "and" refer to the same person or thing, the verb is singular.
But here article "the" used twice before each noun to indicate two different subjects, thus "have" used.

___________ many times every winter in

• It snows
• It snowed
• It is snowing
• It is snow
Correct Option: A  [ It snows ]

Remark:

None of the students ___________ responded.

• have
• were
• is
• has
Correct Option: A  [ have ]

Remark:

The horse and the coach ________ arrived.

• have
• have been
• would
• has
Correct Option: A  [ have ]

Remark: When two singular nouns joined by "and" refer to the same person or thing, the verb is singular.
But here article "the" used twice before each noun to indicate two different subjects, thus "have" used.

Sir, our list of grievances here ________ a long one.

• are
• were
• is
• was
Correct Option: C  [ is ]

Remark: "list" is a singular noun, and when referring to a singular entity, the verb should also be singular.

Every man, woman and child ________ charmed.

• was
• were
• has
• are
Correct Option: A  [ was ]

Remark:

The Prime Minister with all the members of his cabinet __________ arrived.

• is
• have
• has
• are
Correct Option: C  [ has ]

Remark: