Cứu với! 27. By an unfortunate………….., the brother's sister was not invited to the wedding. A. insult B. oversight C. neglect D. disregard 28. ………….. every industry in our modern world requires the work of engineers. A. Only B. Wholly C. Virtually D. Hardly 29. This young tree could not have been damaged by accident. I believe it was done ............. A. in fact B. on purpose C. by appointment D. by plan 30. The………..to success is to be ready from the start. A. key B. response C. agreement D. demand