[ Grammar ]
Widespread rock falls also are ……………by loosening of rocks as a result of ground shaking.
A. Caused
B. Causing
C. Cause
D. Being caused
E. Causes

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Future Tense and ConditionalsSentence CompletionPresent Perfect Simple and ContinuousIrregular verbsGrammar & VocabularyPresent simple or Past simpleOpinion / AgreementPronoun-Verb AgreementPresent Perfect ContinuousAdjectives, Adverbs, and PrepositionsOther quiz:
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