Topics: Gerund & To Infinitive
The airline passenger insisted on ………… to business class for extra comfort during the long flight.
A. being upgraded
B. upgrades
C. upgrading
D. to upgrade
Select your answer:

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Future Time and TensesNouns & PronounsVerb Present Simple TenseCompound and Complex SentencesVerbs - third personPrepositions & Prepositional PhrasesGrammar - First ConditionalCompliment, Congratulation, and HopeGrammar - FutureCompound AdjectivesOther quiz:
Grammar › View… amazing person
A. an
B. a
Vocabulary › View
necessary for survival or very important
A. vault
B. vital
C. yolk
D. yearning
