I can’t find my keys. I _____ to take them when I left the house this morning.
A. must forget
B. must have forgotten

Random Topics:
Sentence and FragmentFuture Simple TenseBe Going To vs. WillDegrees of AdjectivesPronouns, Verb, ConjunctionVerb & GrammarArticles and PronounsApostrophe GrammarPrepositions Of PlacePassive SentencesOther quiz:
Grammar › ViewHaving returned from the ocean to the stream where it was born, an adult salmon’s life cycle ends when it spawns and dies, after which its offspring start the cycle anew.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. an adult salmon’s life cycle ends when it spawns and dies,
B. an adult salmon spawns and dies, completing its life cycle,
C. the spawning and death of an adult salmon complete its life cycle,
D. the life cycle of an adult salmon is complete when it spawns and die,
Modals of Advice › View
A: My clothes are dirty.
B: You…
A. You should to clean your clothes.
B. You should clean your clothes.
C. You should cleaning your clothes.
Grammar › ViewI was wondering _____ tell me when the next plane from Chicago arrives?
A. could you
B. can you
C. if you could
D. if could you
Present and Past Tenses › View
. We (don’t – doesn’t – isn’t) go to school on Fridays.
A. don’t
B. doesn’t
C. isn’t
