• Home
  • "Jeff, you are a hard .
Question 1:
"Jeff, you are a hard ....... to crack. I have worked with you for five years and I still don't know much about you.*^*You have always refused my invitations and you never answer any of my questions," Paul complained.
A. safe
B. apple
C. board
D. nut

These questions are from this test. Would you like to take a practice test?

English Slang Idioms (237) | B2 – Upper-Intermediate