Which compound sentence is written correctly?
A. Bats eat mosquitos and other pests, and farmers use bats to protect their crops.
B. Bats eat mosquitos and other pests, but farmers use bats to protect their crops.
C. Bats eat mosquitos and other pests, so farmers use bats to protect their crops.
D. Bats eat mosquitos and other pests, yet farmers use bats to protect their crops.

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Conditionals 1,2,3Grammar & VocabularyCompound and Complex SentencesRelative ClausesPresent Perfect and Present Perfect Progressive TensesComparative and SuperlativesThe Structural Types of SentencesSubordinating ConjunctionsLinking VerbSimiles, Metaphors, Personification and HyperboleOther quiz:
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My wife is a much safer driver than …
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Choose the correct statements of present perfect tense for negative sentence.
A. Sub + object + hasn’t / haven’t + past participle
B. Object + hasn’t / haven’t + past participle
C. Hasn’t / haven’t + sub+ past participle
D. Sub + haven’t / hasn’t + past participle