Question

I left the countryside twelve years ago when my father was transferred to an artillery division in Dalian. Ever since then we have lived in the city. If my aunt were not in Dismount Fort, I might have forgotten that small town where I went to elementary school only for two years in the late 1960s. My aunt comes to visit us every fall, helping Mother prepare our winter clothes and pickle vegetables. Once in a while she brings that town back to my memory. Which sentence from this excerpt includes an adjective clause?

Answer 1

Answer:

If my aunt were not in Dismount Fort, I might have forgotten that small town where I went to elementary school only for two years in the late 1960s.

Explanation:

An adjective clause is a group of words with at least a verb and a subject that does not express a complete thought (they're dependent clauses) and whose function is to modify nouns; These type of clauses usually begin with a relative pronoun (who, whom, whose, that, which) or a relative adverb (when, where, why).

So, in the sentence selected, the adjective clause is "where I went to elementary school only for two years in the late 1960s" because it is a dependent clause (it does not express a complete thought on its own), it modifies or describes the noun phrase "that small town" and it begins with the relative adverb "when."

Answer 2

The sentence that contains the adjective clause is:
Ever since then we have lived in the city. Ifmy aunt were not in Dismount Fort, I might have forgotten that small town where I went to elementary school only for two years in the late 1960s.

An adjective clause follows this formula: 
It must have a:
subject and verb
begin with a relative pronoun
or a relative verb
Hope this helps!