Complex sentence is formed by adding one or more subordinate (dependent) clauses to the main (independent) clause using conjunctions and/or relative pronouns.
Answer:
Either of these changes can build tension and suspense
Explanation:
Hey there
My answer is: B. He promises her singing birds. and <span>
D. He promises to make her a gown of wool from pretty lambs.</span>
hope it helps
It's PQRS, the one in the middle