along(adverb)

to the place mentioned

I'll come along in five minutes.

there(adverb)

used to introduce sentences in which a state, fact etc is being announced

There has been an accident at the factory; There seems to be something wrong; I don't want there to be any mistakes in this.

o(interjection)

an expression used when speaking to a person, thing etc.

there(adverb)

at that time; at that point in a speech, argument etc

There I cannot agree with you; Don't stop there; – tell me what happened next!

father-in-law(noun)

the father of one's wife or husband.

who(pronoun)

(used as the subject of a verb) what person(s)(?)

Who is that woman in the green hat?; Who did that?; Who won?; Do you know who all these people are?

there(adverb)

(placed immediately after noun) used for emphasis or to point out someone or something

That book there is the one you need.