1.neither the airport official nor the airline staff KNOWS the reason for the delay of the flight.<----點解know個字.....要加s....點解唔係用plural verb
2.the person you described doesn"t live here.<---佢話you.....個do字.....點解唔係用don"t.....
3.they didn"t tell us to expect a large crowd for the meeting tonight.....<-----點解don"t 係過去式...我唔明!!!
幫幫我解答這3條問題......plx!!!plx