31. A lot of the pollution (have been / has been) caused by the paper factory. → 32. None of the TV programmes (is / are) worth watching tonight. → 33. I hope everyone (have / has) a good holiday. → 34. The number of pupils in school with reading difficulties (have / has) fallen this year. → 35. Some people (have / has) the strangest hobbies. → 36. None of information (is / are) very useful. → 37. Any of Vietnamese students (is / are) good. → 38. Each of books (have / has) its own quality. → 39. A lot of rice (have / has) been sold to the poor people in Africa. → 40. Some of milk (is / are) spilt on the table. →