5 The River Thames has played a significant role in military operations throughout the country's history. In ancient times, the Romans set their sights on expanding
their empire by using the navigable waters of the Thames to invade the British
Isles. From the sea, they could easily enter the mouth of the river and move
inward. After a failed attempted at defeating the British tribes the year before,
Julius Cesar broke through their defenses along the River Thames in 54 B. C.
Although the British fought against the Romans nearly a century later, Roman
forces remained in England until the fall of the empire.
In paragraph five, the phrase set their sights means
A)
avoided thinking about
B)
made their goal
C)
angrily denied
D)
celebrated joyously