In the following sentence, what is the main clause?

Although the part failed, Airline Parts, Ltd. asserts that it was not negligent.

In the following sentence, what is the predicate?

Airline Parts, Ltd. manufactures parts for airplanes.

Identify the register that the writer has used.

I have just reviewed the documents that you left with me. [Assume that this sentence appears in a letter to a client that you know well.]

Identify the register that the writer has used.

Let's meet tomorrow to discuss changes. [Assume that another member of your law firm included this sentence in an email to you.]

Identify the register that the writer has used.

Because the plaintiff has not met her burden of proof, the case is dismissed. [Assume that a magistrate made this statement in court.]

Identify the register that the writer has used.

You’ve got me 24/7.

Identify the register that the writer has used.

Comes now the plaintiff and makes the following assertions.