The United States entered the war between North and ular with
As you read,
nd the ways
South Vietnam...
A
by influencing surrounding countries to fight.
B
and freed South Vietnam from enslavement.
to try and stop the spread of communism.
D
to help spread communism throughout the world.

sentences vary by structure as well as by function. there are compound, complex, and compound-complex sentences.

simple sentence

i like to read.

a simple sentence has one independent clause.

compound sentence

i like to read, and i also like to write.

a compound sentence includes more than one independent clause, connected by a coordinating conjunction (and, but, for, nor, or, so, or yet).

complex sentence

i prefer to read books that are bestsellers.

a complex sentence includes one independent clause and one or more dependent clauses. (a dependent clause is one that cannot stand alone.) types of dependent clauses include relative clauses (i kicked the boy who pinched me), adverb clauses (i am going home now because i have a curfew), and noun clauses (i don't know what to do next).

compound-complex sentence

although i prefer to read current bestsellers, i do like to read old agatha christie mysteries, and i also like some 20th-century science fiction.

compound-complex sentences take a bunch of clauses (multiple independent clauses, and one or more dependent clauses) and toss them together like a salad. although these sentences take practice to write in a grammatically correct fashion, they can hold a tremendous amount of meaning, and are common in academic writing.

awnser:

jem is "moody and silent" after the pants incident. the new school year starts, and scout finds second grade just as boring as first. one day, she and jem are walking home together when jem reveals that when he found his pants that night, they were all folded up, and the tears had been crudely sewn up, as if someone knew that he would be coming back for them. he finds this highly eerie. then, they find a ball of twine in the radley oak tree knothole. again, they aren't sure if it is a gift for them or not, so they leave it for a few days. when it remains in the hole for a few days, they take it, and decide that anything left there is okay to take.