I. Circle the letter A,B,C,or D to indicate the correct answer to each of the following questions

1. A lot of dancers go to Rio de Janeiro to
A. attend
B. join
C. perform
8. Nuclear power
in the future.
A. will replace
B. replaced
9. Wind, hydro and solar are
A. modern
10. It's really difficult to
A. fly
the Carnival.
D. appear
C. will be replaced D. replaces
resources.
C. non-renewable D. new
B. renewable
a bicycle up the hill.
B. drive
C. pedal
D. sail