Cartman: We—- the procedures incorrectly. It failed.
Kenny: We——— the procedures incorrectly. I read every step carefully before the experiment and checked each one afterwards.
___
A. could have followed / should have performed
B. can’t have followed / can’t have performed
C. must have followed / can’t have performed
D. may have followed / didn’t need to perform
E. might follow / shouldn’t perform
Random Topics:
PronounPast SimpleSubject Verb Agreement Irregular VerbPrepositions after Verbs and AdjectivePassive Voice Active VoiceConditionals (0 - 1 - 2)Modal RequestsGrammar: Reported QuestionsGrammar and PrepositionsModals of AdviceOther quiz:
Grammar › ViewWhich is capitalized correctly?
A. i wish I knew how to scuba dive.
B. i wish i knew how to scuba dive.
C. I wish I knew how to scuba dive.
Grammar - Present Perfect with already, just, yet › View
He is lying! He says he has paid the money he owes me, but he hasn’t paid it _____.
A. ago
B. never
C. yet
D. already
Grammar › ViewWhich word means more than one candy?
A. canes
B. cands
C. candys
D. candies
Modal Verbs › View
Her exam is tomorrow. She ____ finish studying tonight.
A. have to
B. don’t have to
C. must
D. mustn’t