[ Perfect Tenses of Verbs ]
Some of the climbers had left for the summit too late.
A. present perfect
B. past perfect
C. future perfect

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Progressive Verb TensesFirst ConditionalVocabulary and Verb TensesPrepositions & Modal VerbsLinking WordsAdjective & AdverbSynonyms and VocabularyPresent Tenses: Simple vs ContinuousPrepositionsGrammar (was, were, could, could not)Other quiz:
Simple Tenses › ViewAre the windows ___ by the janitor every day?
A. cleaning
B. cleaned
C. clean
D. cleans
Grammar › View
Identify the subject in the sentence below?
Behind the tree lurked a tiger.
A. tree
B. lurked
C. a tiger
Vocabulary › Viewto warn gently but seriously
A. Sancrimonious
B. Laxity
C. Admonish
D. Inextricable
Progressive Perfect and Simple Verb Tenses › View
Many Cuban Americans, however, are deciding that Miami is now their permanent home.
A. Present Progressive
B. Future
C. Past Progressive
D. Present Perfect