TOEFL Booster / For higher marks try using idioms Lawrence J. Zwier Special to The Daily Yomiuri Back in June, before our guest columnist took on the TOEFL Booster for the summer (thank you, Lynn!), we had just introduced the topic of idiomaticity. We'll pick up that topic again today and see how valuable it is in getting higher writing scores. The rubric--scoring guide--for the independent writ..