[ Vocabulary and Grammar ]
Coal power stations ________ sulfur dioxide into the surrounding air.
A. release
B. reduce
C. avoid
Select your answer:
Random Topics:
Modal PossibilitiesTime PhrasesAdverbial Clause of Cause and EffectClauses and ConjunctionFuture Perfect ContinuousToo or EnoughSecond ConditionalGerund or InfinitivesPast Continuous TensePerfect TenseOther quiz:
Passive Voice › ViewWhen you use the word BY in Passive voice, it means
A. Who or what did the action.
B. The action is the most important.
C. The verb must be conjugated.
D. The complement is the main part of the sentence.
Tenses (Present and Past) › View
When I started work at 6 o’clock this morning, the sun ———— behind the mountain.
A. rises
B. is rising
C. rose
D. was rising