2. The office manager hired his brother-in-law Bertie Brown; he didn't know what else to do. (two related clauses)
3. Bertie was supposed to plan the work flow, the vacation schedule, and the office party; oversee the work schedule, the secretarial pool, and the mail room; and finally to straighten out the whole office. (separate elements that contain commas)
4. Unfortunately Bertie was totally confused himself; he was a complete bungler. (two related clauses)
5. Dudley Durong, the office manager, knew that Bertie was not working out; nevertheless, he kept him on. (two clauses joined by a conjunctive adverb)
6. Not only did Bertie fail to straighten out the mess in the office; he made things worse. (two related clauses)
7. In time Bertie found something that worked; he just let things go until someone else took care of them. (two related clauses)
8. Other people did Bertie's work for him; consequently, the office began to run more smoothly. (two clauses joined by a conjunctive adverb)
9. At the end of the year Bertie was honored along with Cliff Hoskins, tool room chief; Maria Marlowe, winner of the typing speed contest; and Oliver Oliphant, the man who did most of Bertie's work. (separate elements that contain commas)
10. The president of the Mason Company was impressed with Bertie; therefore, he promoted the man to a higher position. (two clauses joined by a conjunctive adverb)