0 Usage of Idioms in Toefl Exam

What is an Idiom? An idiom is an expression (i.e. term or phrase) the meaning of which cannot be concluded from the dictionary definitions & the arrangement of its elements, but refers in lieu to a figurative meaning that is known only through conventional use. This explanation is an adaptation from wikipedia. What I am concerned about is the usage of idioms as well as a thorough understanding of their occurrence in study abroad qualifying examinations like GRE GMAT TOEFL & SAT. Most students who don't have English as their native language face difficulties in the aforementioned exams due to the surprise elements like idioms .One obvious...