Choose whether the highlighted part in red is an independent or dependent clause.
'If' tells you that this is the dependent clause and also it would not make sense on its own. 'I will be so upset' makes sense on its own, so it's independent.
The first clause does not make sense on its own, so its dependent.
The clause in red has 'when' at the start, so its dependent.
This is an adverbial clause, and the part in red is the independent part of the clause.
The part in red is a relative clause and so is dependent. It would not make sense on its own but 'My sister has always been very outgoing and confident' could stand alone as a sentence.
The part with 'that' is a noun clause. 'I believe' is categorised as a complete thought so is the independent clause.
'After' should have made it clear that it's the dependent clause, and so the other part is independent.
This is an adverbial clause, with 'because' creating the dependent clause.
'That has been stolen' is the dependent part of this relative clause. The other part in red could stand alone as a complete thought if the dependent clause was removed i.e. 'The car was parked in front of the house'.
'As' should tell you that the second part of the sentence is a dependent clause.