[ 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

Random Topics:
Verbs and TensesTenses and ConclusionsDistinguishing Future TensesPassive Voice Active VoiceArticles and DeterminersConjunctions and PrepositionComparative and Superlative AdverbsPassive Voice and Relative ClausesAdverbs of Manner, Likes and PreferencesReported Speech and Reporting VerbsOther quiz:
Grammar › View. Choose the proper possessive pronoun: “These toys are _____.”
A. your
B. yours
C. you’re
D. your’s
Vocabulary › View
We need to use sources of ___ which are environmentally friendly.
A. energy
B. products
Present Tense › ViewJoe _____ reading that book.
A. had been finishing
B. have finished
C. has finished
D. had finished
Grammar › View
_______ is Smart Bookshop ?
It is in front of the Police Station.
A. When
B. What
C. Where
D. How
