Answer:
1 and 2 are the dependent clauses
Explanation:
If someone wrote you a letter that just had "Mrs. Basel, Mrs. Bates, and Mrs. Wonders" on it, you'd be pretty confused at what message they were trying to convey, same with "Are pretty legit teachers." However, if you received a letter with just "I love ELA!" or "Reading makes me happy" on it, you'd understand the message just fine. 3 and 4 can be spoken normally on their own; however, 1 and 2 need another clause to make sense.
Answer: to portray Huck’s father as uneducated and ignorant.
In this excerpt, Twain most likely uses humour to highlight the absurdity of the father's sentiment. This is done in order to portray Huck's father as uneducated and ignorant. The father tells Huck that he does not see the importance of school. Moreover, he thinks school is damaging because it will teach Huck to feel superior to his dad, who is unlikely to have attended school.
The second one.., Since Avonlea occupied.
This gives the setting by telling where the story took place.
"He had come like a thief in the night." is taken from the Bible, specifically Thessalonians 5:2. It refers to the second return of the Lord (Jesus), that means another one from the one we know. The first one is his rebirth after beeg crucified. He will return as "a thief in the night" because we don't know when it will happen, he won't announce it.