Plentiful means existing in large quantities, which is the same as “abundant.”

Every day (two words) is the correct adverbial phrase. “He goes” is correct present simple tense for he.

Furniture is uncountable and takes singular verb – “is new” is correct.

An “optimist” always sees the positive side of any situation.

Good at is the correct phrase to indicate proficiency in a skill.

Faded is the opposite of “vivid” which means intensely deep or bright.

Reported speech changes present to past: “I am” → “he was”

Spill the beans means to disclose confidential information or a secret.

Accused of is the correct prepositional phrase.

Correct punctuation for direct speech is comma before quote and period inside.

Crisis becomes “Crises” in plural due to its Greek origin.

Accommodation is the correct spelling with double ‘c’ and double ‘m’.

An imperative sentence gives a command or makes a request.

An is used before vowel sounds. “Umbrella” starts with a vowel sound.

Neither is singular, so “has” should be used instead of “have.”

Passive voice: “They completed” → “The project was completed.”

Rapid and “Quick” both mean fast.

Omniscient literally means all-knowing.

Have been waiting is Present Perfect Continuous tense.

She doesn’t like tea is grammatically correct in present simple tense.

Selfish is the opposite of generous.

Break the ice means to initiate conversation to ease tension.

Born in 1990 is correct. Use “in” for years.

Decision is the correct noun form of “Decide”.

Present simple passive: “writes” → “is written”

Two independent clauses joined by a conjunction form a compound sentence.

Minute (pronounced my-newt) means extremely small.

Team is singular; correct verb is “is winning.”

Somnambulist is the medical term for someone who walks in sleep.

A complex sentence has an independent and dependent clause.