[ Grammar ]
The teacher explained that the Earth __________ around the Sun.
A. revolves
B. revolved
C. is revolving
D. has revolved

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Direct Object and Indirect ObjectVerbs + Infinitives / GerundsPhrase vs ClauseNoun PhraseVerb ConjugationTenses - Irregular VerbsDemonstrative PronounsPast Continuous Tense & Past ModalsVerb Tenses (Progressive, Perfect)Mixed Present TensesOther quiz:
Grammar › ViewA famous movie star is going to ___ an appearance here tonight.
a. do
b. make
Grammar › View
One of the students ____________ pitching the tent when he heard a loud thud.
A. is
B. are
C. was
D. were
Vocabulary › ViewThe large scale introduction of manufacturing, advanced technical enterprises, and other productive economic activity into an area, society, country, etc.
A. Industrialization
B. Capital
C. Enclosure Act
D. Cottage Industry
E. Factory
Modal Verbs › View
Mr. Morton was unhappy with the service he got. He _________ a complaint.
A. may not arrive
B. might ask
C. may not get
D. might make
E. might miss
