[ Past Perfect Simple & Past Perfect Continuous ]
Had they climbed? is an example of Past Perfect Continuous
A. TRUE
B. FALSE

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Used to - Would - TensesSuperlative AdjectivesAdverbs (manners & modifiers)Simple Past ContinuosVerb Phrasesa, an, the, zero articleArticles with Proper NounsGerunds/InfinitivesUncountable NounsHow much or How many?Other quiz:
Simple Present & Present Progressive › ViewDoes she ____ the house in the afternoons?
A. cleans
B. clean
C. cleaning
Modals › View
Nobody answered the telephone at the dentist. I called several times.They ______ early.
A. cant have left
B. must have left
C. might have left
D. should have left