The fish of class Osteichthyes, known as "bony fishes," have several features in common, including a bony skeleton, a combination of lungs and gills, and they have a swimbladder that allows the fish to float at any level in the water.
A. they have a swimbladder that allows
B. having a swimbladder allowing
C. a swimbladder that allows
D. to have a swimbladder that allows
E. have a swimbladder that allows
OA C
Source: Princeton Review
The fish of class Osteichthyes, known as "bony fishes," have several features in common, including a bony skeleton, a
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