14. The professor, together with his assistant, entering the lecture hall. A. am B. is C. are D. was 15. Please the light when you leave the room A. turn on B. turn off C. turn down D. turn up 16. Laura's brother isengineer. A. a B. an C. the D. no article 17. We are going to have a holidayJuly to celebrate our wedding anniversary. A. in B. on C. during D. until 18. Learning English with electronic devices is A. interesting B. interested C. interest D. interests 19. He was fascinated by the car at the exhibition. A. old red German B. red German old C. German old red D. old German red