Topics: Sentence Completion
Professor Stevens had studied many caves, but he had —– before seen the ones in Castleton.
A. never
B. whenever
C. yet
D. every
Select your answer:

Random Topics:
Adverb PhrasesAdjectivePresent Tenses: Simple vs ContinuousConditionals and WishesModalsSimple Present Negative and QuestionComparative - SuperlativePresent Simple & Present Progressive TenseProgressive TenseGerunds, Infinitives and Modals of PossibilityOther quiz:
Present Perfect Adverbs and Indirect Questions › ViewHis football team has won all the matches ______ 2001.
A. never
B. for
C. yet
D. since
Present Perfect Tense › View
Researchers __________________________________ the location of the Titanic on the ocean floor.
A. Has found
B. Have found
C. Have find
D. Have finded
