C1:I was reading while my brother.... Football with his friends
A.was playing 
B.is playing
C.plays
D.played
C2:....you post the letter for me?
A.will
B.do
C.are
D.must
C2: have you ever been to a ..... Festival 
A.bull-fight
B.bull-fighting
C.fight-bull
D.fighting-bull
C3: Japan has a big......industry
A.car-making 
B.car-make
C.making-car
D.make-car
C4: milk bottles can be ...... After being cleaned
A.recycled
B.soaked
C.broken
D.reused
C5: You'll get back your..... When you bring the cans back for recycling.
A.payment 
B.deposit
C.account
D.envelope