We all know that dinosaurs lived on the Earth more than ______ years ago.
#51424
A
sixty million
B
millions of
C
sixty million of
D
million of
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Please turn to page           and look at the          picture in this unit.
#51662
A
twentieth; one
B
twenty; one
C
twentieth; first
D
twenty; first
Please pass me two---------.
#51794
A
pieces of paper
B
pieces of papers
C
pieces paper
D
piece papers
As a result of the fight, Jim was in ________ prison for ________ years. 
#51350
A
the; five
B
the; fifth
C
/; five
D
/; fifth
_____trees are planted in our city every year.
#51324
A
The millions of
B
Million of
C
Millions of
D
Million