Vivid means bright, lively, and full of life or color.

Quickly describes how she runs, making it an adverb.

Occurrence is the correct spelling, meaning an event or incident.

Sparse means thin or limited; its opposite is “plentiful”.

Passive voice shifts focus to the object receiving the action.

For is used with a period of time, like ‘five years’.

A “Philanthropist” is one who loves and helps humanity.

We use “married to” to indicate the spouse.

Better is the comparative form of “good”.

Present tense changes to past in indirect speech: “am” → “was”.

The plural of “crisis” is “crises” (change of -is to -es).

Melancholy means deep sadness or sorrow.

Senior is followed by ‘to’, not ‘than’.

An is used before words beginning with a vowel sound like ‘honest’.

Future Perfect shows an action completed before a future time.

Rigid means stiff; its opposite is “flexible”.

Definitely is the correct spelling.

Infallible means incapable of making mistakes.

Passive voice: object + will be + past participle.

Frugal means economical or thrifty.

Since is used for starting point in time.

Opaque means not allowing light to pass through; opposite of transparent.

She has is correct for present tense singular.

Fond is followed by “of” when expressing liking.

Accommodate has double ‘c’ and double ‘m’.

Glutton means a person who eats excessively.

Past Continuous describes an action in progress in the past.

Contract means to shrink or reduce size.

Abundant means plentiful or in large quantity.

Is being sung shows present continuous passive.