There are plenty of questions to practice with but so many errors in spelling, grammar, and answers. It just looks like it was thrown together by people who 1) are not fluent in the English language, and 2) haven’t actually checked the work to be sure that the answers they’ve marked as correct are actually correct. There are questions which are posed giving the definition of a specific term, however, in the answer choices the wrong term is given as the ‘correct’ choice.