A    Tell B that the ceiling is cracked.
B    Ask A if he/she wants to move to a new apartment.
A    Agree with B.
C and D knock the door.
D    Greet A and B.  
C    Tell A and B you want to borrow a battery charger for cell phone.
A    Said Ok. Tell C that it is (near/next to/on) the (sofa/cooker).
C    Repeat the position of the battery charger.
A    Say that C is correct.
B    Tell C and D that the ceiling is cracked.
D    Say that it is (not good/ terrible). Tell A and B to contact the apartment owner.
B    Ask D the telephone number of the owner.
D    Tell B the telephone number.  
C    Tell A and B that you will return the battery charger tomorrow. Say thank you.