A cookie recipe gives the following numbered steps.

1. Preheat oven.
2. Grease cookie sheets.
3. Cream shortening and sugar.
4. Mix eggs and flavoring into the cream.
5. Measure and sift dry ingredients.
6. Add dry ingredients to mixture.
7. Drop the completed mixture by spoonfuls onto sheets and bake for 10 minutes.

Although the steps are numbered, they do not always reflect immediate precedence relationships. Develop a table that lists the immediate predecessors for each activity. (Enter your answers as comma-separated lists. If an activity does not have immediate predecessors, enter NONE.)

Activity	Immediate Predecessor
1
2
3
4
5
6
7

Answer rating: 100% (QA)

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