21. The new speed limit on this road becomes ........... from June 1st. ( effect) 22. They have to check the ............ of the security system at the airport ( effect). 23. She is a much loved and highly .......... teacher. ( respect) 24. He criticized the recent poor .............. of the company. ( perform) 25. Do you consider it the .............. of religious experience. ( universal) 26. It is a job with excellent ............. prospects. ( promote) 27. The changes was made with ........... little difficulty. ( surprise) 28. We try to make these training courses as .......... as possible (real) 29. The company’s exports have been increasing .................. ( steady) 30. Most people said that paying was their main ............ for working. ( motivate) giải thích cho mình nữa nhé cảm ơn