[ Perfect Tenses ]
How long … for the book before you found it?
A. have you looked
B. have you been looking
C. had you looked
D. had you been looking

Random Topics:
Adverbs, Prefixes, and SuffixesPhrase vs ClauseWill and Going toConditional ClausePast Simple (to be)Future Tense VerbPossessive PronounsPast Continuous TenseCorrelative conjunctionsPast Simple (Questions)Other quiz:
Past Tenses › ViewYou sound out of breath. _____?
A. Have you run
B. Have you been running
Subject Verb Agreement › View
Ham and eggs _______ Nathan’s favorite breakfast.
A. is
B. are
Grammar › ViewIt was raining hard, _____ the baseball game was called off.
A. and
B. or
C. but
D. so
Present Simple and Continuous › View
My friends_________(study) English on Sundays.
A. studies
B. study
C. studied
D. are studying
