Teachers can use cloze tests to help students develop proficiency in reading, vocabulary, grammar, and listening. Cloze Generator (CG), a software program developed by the authors, inserts blanks automatically in a text for each n-th word, for a certain part of speech, or for a certain level of vocabulary based on the JACET8000 word list. It is possible to make blanks of certain words, or words specified manually. It produces cloze exercises, either as printed material or HTML files for e-learning. A Windows version or a Mac version of CG can be downloaded from http://www.oit.ac.jp/ip/ kamiya/mwb/mwb.html for free. In this article, the authors will explain how to use CG to make cloze passages and how to effectively use them in English language learning and teaching.