Grammar-Comparative and Superlative Adjectives

Airships, or dirgibles, provided the __________ transatlantic pasenger air service.
1. earliest
2. most earliest
They were __________ during the 1920s and 1930s.
1. most popular
2. popularest
They were filled with gas and were __________ than air.
1. lightest
2. lighter
At first, people thought that hydrogen was the _________ gas for dirgibles.
1. goodest
2. best
Then helium replaced hydrogen because helium was __________.
1. more safe
2. safer
The __________ airships were the zeppelins.
1. most big
2. biggest
Some were __________ than 800 feet.
1. longer
2. more long
The __________ zeppelins flew 80 miles per hour.
1. most fast
2. fastest