11. Good progress has been made by John in his studies. John ……………………………………………………………………………. 12. They couldn’t be found anywhere. Noone…………………………………………………………………………….. 13. These boys aren’t taught by Mrs. Johns. Mrs. Johns ……………………………………………………………………… 14. Nothing had been moved until the police arrived. They……………………………………………………………………………. 15. Is mathematics taught in this school? ………He…………………………………………………………………………. 16. the machinery wasn’t damaged by the accident. the accident …………………………………………………………………………… 17. Please wait here while your luggage is being examined. Please wait here while they……………………………………………………………………………. 18. The results of the contest are going to be announced. They…………………………………………………………………………….. giúp mik dc ko ạ