[ Past Tense and Neutral ]
Many residents fled their homes when the volcano _________ to erupt.
A. threatened
B. is threatening
C. has threatened
D. would be threatening

Random Topics:
Take or PutPresent or Past TensesObject PronounComparison DegreeGrammar - First ConditionalVocabulary and TensesTensesTenses and Verb FormsPassive Voice with Modal VerbsPunctuating ClausesOther quiz:
Hope, Thank, Modal Verbs › ViewComplete the sentence: “I hope ___ to study in Harvard”
A. for
B. to
Vocabulary › View
The paddy fields ________ over 3 villages.
A. covers
B. stretch
C. stretching
D. covered
Grammar › ViewI……………when I saw the cat chasing the rat.
A. scream
B. screams
C. screamed
D. screaming
Subject-Verb Agreement › View
The actors and the director (understands, understand) the lighting problems.
A. Understands
B. Understand