RRBook is a vocabulary book for you as a language learner. You can use RRBook to record and review what you learn every day. All new words you have to record by yourself with definitions and examples, it is very important for you to remember them.
RRBook is a vocabulary book for you as a language learner. You can use RRBook to record and review what you learn every day. All new words you have to record by yourself with definitions and examples, it is very important for you to remember them.