[ Grammar ]
They _______ never explored a cave.
A. are
B. has
C. have
D. did
Select your answer:

Random Topics:
Things in EnglishPast Simple and Past ProgressiveVerbsSimple Past TensesPresent Perfect or Past Simple TensePrepositions of Location, Movement and TimeModal Verbs and AdviceGrammar TOEFLFirst & Second ConditionalTOEFLOther quiz:
Grammar and Vocabulary › ViewWe got to the hill a few days ______.
A. ago
B. now
C. later
D. tomorrow
Phrase or Clause › View
A _______ contains both a subject-verb pair.
A. Clause
B. Phrase
