____ that you were coming, I wouldn’t have gone out.
A. Had I known
B. I had known
C. If I knew
D. I should know

Random Topics:
Regular and Irregular VerbsWord FormationConditional TensesGrammar: Reported QuestionsAdverb ClausesOffering HelpTenses: Present simple, Past Simple, Future SimpleCompound SentencesAuxiliary and Modal VerbsPassive Voice and Relative ClausesOther quiz:
Vocabulary › ViewReplace the capitalized word in the sentence below with its best synonym:
The local authorities must use CAREFUL measures to assure that the vote is transparent and secure.
A. perilous
B. mysterious
C. discreet
D. delighted
Grammar › View
Aren’t you ______ her off at the airport now?
A. drop
B. dropping
C. drops
D. dropped
What does the sun look like? → It is round and ____________.
A. broken
B. bright
C. spotted
D. soft
Grammar › View
Which sentence is punctuated correctly?
A. Petey my pet snake has only bitten one person.
B. Petey, my pet snake, has only bitten one person.
C. Petey, my pet snake has only bitten one person.
D. Petey my pet snake, has only bitten one person.