Answer:
3) The package arrived while you were sleeping. (Adverbial Clause)
4) Antonio read the newspaper that Ishu bought (Adjectival Clause)
5) The crowd became quiet when he raised his hands. (Adverbial Clause)
6) The squirrel that bit her didn’t have rabies. (Adjectival Clause)
7) Take the newspaper when you leave. (Adverbial Clause)
8) This engine operates more efficiently than the one that I bought last week. (Adjectival Clause)
9) The students all studied the material so that they would pass the course. (Adverbial Clause)
Clauses:
=> Adverbial Clauses usually start with so,when, while , where etc.
=> Adjectival clauses start with that, which etc.