Question 41: Mark the letter A, B, C or D to indicate the correct answer to each of the following question: 62. You can talk to him until you are_______ in the face, but he still won’t understand.
EASY ANSWER
Explanation: (until you are) blue in the face (idm): for a long time
The remaining answer: wrong structure.
You can talk to him a lot, but he doesn’t understand anything either.
===============