My friend, philosopher and guide _________ my father.

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

Remark: "friend, philosopher and guide" refers to one person.

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.

Not only Pinki but also her friends _________ buying books.

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

Remark:

Either you or I should ___________ the lead.

• took
• taking
• takes
• take
Correct Option: D  [ take ]

Remark:

The boy in the bus ________ like your brother.

• look
• looks
• looking
• have been looked
Correct Option: B  [ looks ]

Remark:

That woman ____________vegetables.

• sells
• sell
• have sold
• selling
Correct Option: A  [ sells ]

Remark:

Each of the students ___ to submit their assignments.

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

Remark: "Each" is a singular subject, so it takes a singular verb.

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.

Our Principal and Chairman of the occasion ________ arrived.

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

Remark:

The ruler and the minister ____________ killed.

• was
• has been
• have been
• is
Correct Option: C  [ have been ]

Remark: