Focus: Completing structure problems involving adverb clauses, reduced adverb clauses, and related prepositional expressions. (Note: Two or three items do not focus on one of these structures. These items are marked in the answer key with an asterisk.)
Directions: Choose the one option (A), (B), (C), or (D) that correctly completes the sentences, and then mark the appropriate blank. The first one is done as an example.