1. If he (was, were) over 18, he would have been hired.<br/><br/>2. Only one of the video clips (was, were) usable.<br/><br/>3. The typesetters, not the editor, (was, were) responsible for these errors.<br/><br/>4. Neither the manager nor the employees (was, were) aware of the policy change.<br/><br/>5. Both John and Steven (was, were) promoted.<br/><br/>6. The news from the rescue mission (is, are) encouraging.<br/><br/>7. Ten Steps to Greatness (has, have) been placed in the company library.<br/><br/>8. A child reminded me that the earth (rotates, rotated) on its axis.<br/><br/>9. Tim (don't, doesn't) ask for favors.<br/><br/>10. The president studied the page for a minute and (starts, started) asking questions.