Sometimes some children in my primary school would laugh, when I got out of _______breath after running _____ short way or had to stop and rest halfway up the stairs.

A．the a

B．不填 a

C．不填 the

D．a the

This book _________12 units, _________ the unit of Music.

A．contains, including

B．includes, containing

C．contains, includes

D．including, contains