A．Ten minutes late.
B．Ten minutes early.
C．At ten o' clock.
D．Five minutes early.
A．Books on Internet.
B．Books on physics.
C．Industrial Revolution.
D．Books on history.
A．The librarian thought that the books had been borrowed.
B．The librarian thought that the man was embarrassed.
C．The librarian thought that the exit gate was broken.
D．The librarian thought that the man wanted to steal the books.