1. Items in a series 2
Three or more items in a series require punctuation, usually a comma. The last two items are usually connected with a coordinating conjunction, which is always preceded by a comma.

2. Chip faced the enormous audience, cleared his throat, and passed out. 3
Three or more items in a series require punctuation, usually a comma. The last two items are usually connected with a coordinating conjunction, which is always preceded by a comma.
Model:
Weak Sentence:
Chip faced the enormous audience. He cleared his throat, and he passed out.
Best Sentence:
Chip faced the enormous audience, cleared his throat, and passed out.
Series of verbs

3. 3
Three or more items in a series require punctuation, usually a comma. The last two items are usually connected with a coordinating conjunction, which is always preceded by a comma.
1.Elizabeth went to her room. She turned the radio on low, and she sat down to write a letter.

4. 4
Three or more items in a series require punctuation, usually a comma. The last two items are usually connected with a coordinating conjunction, which is always preceded by a comma.
1. Elizabeth went to her room, turned the radio on low, and sat down to write a letter.

5. 5
Three or more items in a series require punctuation, usually a comma. The last two items are usually connected with a coordinating conjunction, which is always preceded by a comma.
2. She planned the program, and she directed the program. She even took part in the program.
3. They bought warm jackets, and they rented skis and boots. And they drove to the slopes.

6. 2. She planned, directed, and took part in the program.6
2. She planned, directed, and took part in the program.
3. They bought warm jackets, rented skis and boots, and drove to the slopes.