River (transportation) in the United States (consists) (primarily) of barges (pull) by towboats 

 Evelyn Waugh wrote satires that exposed the (arrogant) nature of upper-class Englishmen
A. conceited 
B. masterful 
C. delightful 
D. inferior

 The problem of finding transport to the outback was ……………by the recent torrential rains 
A. exacerbated 
B. deepened 
C. sharpened 
D. fulfilled

There was nothing they could do ……………leave the car at the roadside where it had broken down 
A. but 
B. instead of 
C. than 
D. unless

In the modern world, women’s ……………roles have been changing 
A. natured 
B. naturally 
C. nature 
D. natural

 When the old school friends met, a lot of happy memories ……………back
A. had brought 
B. were brought 
C. brought 
D. had been brought 

 The …………… reason why I don’t want to move is that I’m perfectly happy here
A. main 
B. big 
C. large 
D. great

Have you ever read about a famous general in Chinese history who was very (incredulous)? 
A. unimaginable 
B. excellent 
C. incredible 
D. skeptical

. His patents completely believe in him. He can do things (at random).
A. at stake 
B. at will 
C. at once 
D. at hand

The law applies to everyone (irrespective) of race, creed, or colour.
A. disrespectful 
B. regardless 
C. considering 
D. in spite