A core function of The English Farm is to prepare students to take the Global Business Communication (G.B.C.) test.
First, study a sample test result and discuss it with your trainer.
Next, take a look at the master-list of questions (and bookmark that page).
Finally, take a look at G.B.C. mock test 1 and discuss the flow of the test.
Students taking the G.B.C. need to perform well on complex discussion questions. This means any course, from general business to pronunciation, should have "G.B.C- style questions" thrown in as much as possible.