Classify this sentence as simple, compound, complex, or compound-complex.

My friend, who has recently moved to Michigan to join his family, gave me some living room furniture that I know will be used immediately.

Answer: This sentence is a complex sentence, because it contains several subordinate clauses, dependent on the independent clause.

Explanation:

The independent clause in this sentence is:

My friend ( ...) gave me some living room furniture

subordinate clause:

( ...) who has recently moved to Michigan - depends on the main clause (characterizes "the friend")

subordinate clause:

( ...) to join his family - indicates why the friends moved to Michigan

subordinate clause:

( ...) that I know will be used immediately - described the furniture = one that will be used immediately