Topics: Perfect Tenses of Verbs
Luisa has written to the mayor about the smog problem.
A. present perfect
B. past perfect
C. future perfect
Select your answer:

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GerundsParticipal PhrasesAdverb or AdjectivePerfect Progressive TensesLinking VerbsPresent Simple: affirmative, negative, interrogativeNo Excuse Words / Conjunction SOHave as verb and auxiliaryAuxiliary Verbs (be, do, have)Adverb of MannersOther quiz:
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A. Upset
B. Spirited
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working to discover something
A. detecting
B. detecting
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D. unobserved
