Most fish use their side,back, and tail fins for swimming. Fins are movable,fanlike parts. A fish (27)...........through the water by swinging its tail fins bac

Most fish use their side,back, and tail fins for swimming. Fins are movable,fanlike parts. A fish (27)...........through the water by swinging its tail fins back and forth. A fish use (28)............other fins to steer and to stop. Sometimes, the other fins also help it go fast through the water.
Mos fishes have bodies shaped like a torpedo. Their bodies are pointed at the head and at the tail. This streamlined body helps fish speed through water. Sailfish can swim as (29)......... as 70 miles per hour.
(30)........ fish have unusual shapes.
They fill their swim blandders (31)......air


27. A. Are moving
B. Move
C. Moves
D. Moved
28. A. Their
B. Its
C. It
D. Them
29. A. Slowly
B. Fast
C. Hurriedly
D. Hustily
30. A. Some
B. Most
C. All
D. a little
31. A. In
B. To
C. Near
D. With