My Father, along with others, ___________ worried.

• were
• was
• are
• have
Correct Option: B  [ was ]

Remark:

Unless we ______ now we can't be on time.

• will start
• start
• starts
• will be starting
Correct Option: B  [ start ]

Remark:

All the planets ________ around the earth.

• moving
• moves
• move
• has moves
Correct Option: C  [ move ]

Remark:

One of the boys ________ been given a book.

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

Remark: "One of" is followed by "plural noun/pronoun" and "singular helping verb"

Neither John nor Alex __________ scored the century.

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

Remark: in case "Neither-Nor" the verb must agree with the second subject (the subject closer to the verb).

Most of the labourers _____________ on the strike.

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

Remark:

Each of the students ________ responsible for keeping this room clean.

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

Remark:

This magazine _________ twice weekly.

• is appearing
• appearing
• appears
• appeared
Correct Option: C  [ appears ]

Remark: Subject is "Magazine" a Singular noun, go with singular verb.

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 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.