Topics: Modals with Perfect Infinitive
You ___ the door before leaving the house. Why didn’t you do that?
A. should have locked
B. must have locked
C. might have locked
D. may have locked
Select your answer:

Random Topics:
Modal Verbs of ObligationComparative and Superlative AdverbsPast and Future TensesIndefinite PronounsGrammar RulesInfinitive and GerundVerb Tenses and Past ParticiplesWishesV-ing/to-VFuture - Will and Be going toOther quiz:
Past Tenses › ViewThey __________ (debug) for two hours before they found the error.
A. debugged
B. had debugged
C. were debugging
D. had been debugging
Phrasal Verbs › View
Do you want to stop in this town, or shall we _______?
A. turn on
B. turn off
C. go on
D. look after
