English Skills with Readings 8th Edition by John Langan

Exercise 9

Using coordination, subordination, or both, combine each of the following groups of simple sentences into two longer sentences. Omit repeated words. Various combinations are possible, so for each group, try to find the combination that flows most smoothly and clearly.
Wendy pretended not to overhear her coworkers.
She couldn't stop listening.
She felt deeply embarrassed.
They were criticizing her work.