How Good Is Your Grammar?

It's in the subjunctive, so you need to use "were". As if Beyoncé would get it wrong.

"Its" is the possessive form of it, whereas "it's" is a contraction of "it is".

It's "their". "They're" is a contraction of "they are", obvs.

A pronoun is a word that stands in for a noun, and that's what both occurrences of "it" are doing here.

"That", "me", and "something" are all pronouns.

"I" and "you" both fill in for a noun.

As well as being a powerful woman, "She" is the subject of this sentence.

The adjective "loud" describes the music.

The words "not" and "again" both modify the meaning of the verb ("doing") in the sentence.

Both "all" and "together" modify "we're in this".

"His constant complaining" is the gerund here.

Tom is the subject of the sentence, and chemistry is the object.

They're the object, and the person who needs to go home to feed them is the subject.

"If there are spiders out there" augments the main clause of the sentence, but couldn't stand on its own.

"Bob is good at maths" could stand on its own as a sentence.

A preposition comes before a noun or pronoun and shows the noun's relationship to other words in the sentence.

Just one: past.

It should be "whose", not "who's".