[ Progessive Tenses ]
In the past, people invented steam engines.
A. past
B. present
C. future

Random Topics:
Imperative SentencesSentence Structure and Verb TensesPresent Simple/AffirmativeEssential and Nonessential ClausesReported - GerundSports VocabularyModals and Past ModalsVocabulary and TensesFirst ConditionalsAdverb Clause ConnectorOther quiz:
Grammar › ViewThe Imperial Citadel of Thang Long is also an interesting __________area everyone should pay a visit.
A. geographical
B. archaeological
C. geothermal
D. geological
Grammar › View
Jackson ____________ I trust a lot, is a good friend of mine.
A. that
B. which
C. , whom
D. who
Grammar › View_______ you wrap this item up, please?
A. Must
B. Can
C. Should
D. Shall
Present Continuous › View
What time ________ Ben _________ lunch with Monica?
A. is / have
B. is / having
C. are / having
D. does / having
