Something ____ happened or they would be here by now.
A.must 
B.must be    
C.must have
D.must have been

When you do something, you should _________.
A.weigh up the pros and cons 
B.get through to
C.turn over a new leaf 
D.go down well with

What do you think ____ me? 
A. told 
B.they told
C.didn’t tell
D.did he tell

Navigation around the globe is a lot simpler thanks to the information we receive from ____. 
A.satellites
B.stations
C.systems
D.shuttles

Many people believe that violent computer games can have a harmful ____ on children. 
A.affect 
B.effect
C.damage 
D.involvement

What does the passage mainly discuss?
A.Advances in iron processing in the eighteenth and nineteenth centuries
B.The effects of the Industrial Revolution on traditional architectural styles
C. Advantages of stone and timber over steel as a building material
D.The evolution of the use of iron in architecture during the 1800's

_________(54)
A.marks          
B. signs    
C.signals  
D.symbols

_________(53)
A.foreword          
B.preface          
C.complement  
D. index

_________(52)
A.composes  
B.includes  
C.consists  
D.contains

_________(51)
A.explaining   
B. interpreting
C.suggesting 
D.presenting