what is the adverbial clause of these words?

1.That the earth is spherical amazes me.

2. The man who came last night is Bill

3. I wanted to call at your place when i was coming from home but it began to rain heavily so i change my plans and came straight to school.

Here's a very quick lesson on adverbial clauses.


I can't find one in this:

"1.That the earth is spherical amazes me."

Here, in bold:

"2. The man who came last night is Bill."

Here, in bold:

"3. I wanted to call at your place when i was coming from home but it began to rain heavily so i change my plans and came straight to school."