EXERCISE P1–3 Commas with independent clauses and introductory elements

EXERCISE P1–3Commas with independent clauses and introductory elements

Example:

Because the fog was so thick, we couldn’t see the valley below the lookout.

Because the fog was so thick we couldn’t see the valley below the lookout.

The first sentence correctly uses a comma after the introductory clause.

For more help, see sections P1-a and P1-b.