[ Grammar ]
Today, USB is the most ___ port on a computer.
A. usable
B. useful
Select your answer:
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Conjunction › ViewThe businessman felt furious _____ the bill was very expensive.
A. and
B. but
C. so
D. because
Verb Tenses › View
The penguin __________ across the ice last winter.
A. waddled
B. waddles
C. waddle
D. waddling