[ Infinitives and Gerunds ]
What did they enjoy ______ ?
A. to do
B. doing

Random Topics:
PassivisationModals - Reported Speech - ConditionalsMust / must notAdverbsArticles and QuantifiersGrammar - help/have/let/makeCohesive DevicesPhrasal verbs and Prepositional PhrasesClause Markers TOEFL GrammarPast Continuous and Past Simple TenseOther quiz:
Future Tenses › ViewAlice: I’m so hungry. Tom: Give me a minute, I … (make) a sandwich for you.
A. am going to
B. will
C. making
D. won’t
Sentence Structure › View
Identify the sentence structure of the following sentence: “Tree squirrels, who are omnivores, can eat almost anything.”
A. Simple
B. Compound
C. Complex
D. Compound-Complex