As a teacher anonymously noted, the textbooks had not been checked for several years and are often shared by students, so it is difficult to know who marked them.
Kamar yadda wani malami ya faɗa a asirce, ba a duba littattafan karatun ba tsawon shekaru kuma ana yaɗa su ga ɗalibai, don haka akwai wahala a gane wanda ya yi musu alama.