[ Past Tenses ]
What ________ when the explosion __________?
A. had you done, were occurring
B. did you do, was occurring
C. were you doing, occurred

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Passive Voice - Present TensesAdjective vs AdverbPresent Simple Positive and NegativeTenses PracticePast and Present TensesAdverbial Clause of MannerPresent Perfect and Past SimpleGerunds in SentencesPassive VoiceAdjectives, Adverbs, and PrepositionsOther quiz:
Gerunds and Infinitives › ViewI’m going to carry on ___________ until 8:00 tonight. (work)
A. to work
B. work
C. working
Prepositions › View
Practice listening ……………. English tapes or English programs ………….. the radio.
A. on/to
B. on/with
C. with /on
D. to / on
Grammar › ViewThe company will upgrade _________ computer information systems next month.
A. There
B. Their
C. It’s
D. Its
Grammar › View
What is the subject of the following sentence? George Orwell wrote Animal Farm to discuss the cyclical system of power that seems to never change despite who is in charge.
A. Animal Farm
B. power
C. wrote
D. George Orwell
