In the sentence We should have been shipping yesterday, the words should have been shipping are a __ a. simple subject b. complete subject C. verb phrase d. verb

The correct answer is:**c. verb phrase**### Explanation:In the sentence "We should have been shipping yesterday," the words **"should have been shipping"** form a **verb phrase** because they consist of auxiliary (helping) verbs (**should, have, been**) and the main verb (**shipping**) working together to express the action in the sentence.