Test of English is an important and compulsory part of various competitive examinations. The books in the 100 Test Series cover all the essentials of the English language. These tests help assess the language proficiency of users of English. A firm grounding in the basic rules of grammar helps in spotting errors in sentences. The errors committed by a large number of people who learn English as a second language are those that occur due to grammatical mistakes or slips in idiomatic usage. These tests help improve your English language skills.