1.He is talking so much about America as if he________ there .
A.had been B.has been C. was D. has gone
2.I like_____ in the autumn when the weather is clear and bright.
A.this B. that C. it D. one
3. Not only_______polluted but________crowded.
A. was the city,were the streets B.the city was,were the streets
C.was the city,the streets were D. the city was,the streets were
