[ Tenses ]
. The earth (be)…. here for billions of years.
A. was
B. has be
C. have been
D. has been
Select your answer:

Random Topics:
ProverbsRegular and Irregular AdverbModal VerbGrammar - Place and MovementTime ClausePreposition of DirectionVerb Tenses (Progressive, Perfect)Article and Order of AdjctiveGrammar - Punctuation of SentencesAdjective vs AdverbOther quiz:
General Quiz › ViewRebeca is __________ a baby next month. (use grammar “present continuous”)
A. having
B. not have
C. have
D. has
Coordinating Conjunctions › View
Select the appropriate coordinating conjunction: “You can play outside __ you finish your homework.”
A. and
B. but
C. or
D. so
