There is ＿＿＿ map in the classroom. ＿＿＿  map is on the wall.

A．a, A

B． the, The

C．a, The

D．the ,A

— Where is John?  

— Don't disturb him. He is reading a book in his study _____.  [ ]

A. right away

B. right now

C. on time

D. no longer