I don’t know how to ski, so I didn’t go skiing with Simon last week.
A. If I knew how to ski, I would go skiing with Simon last week.
B. If I would know how to ski, I would have gone skiing with Simon last week.
C. If I had known how to ski, I gone skiing with Simon last week.
D. If I knew how to ski, I would have gone skiing with Simon last week.

Random Topics:
Simple and Progressive Verb TensesInfinitives or GerundsPresent simple & ContinuousThe -ing Form of VerbsPast Tense & Present Perfect TenseComplex Sentences with Adverb ClausesDependent PrepositionsSimple, Compound, Complex SentencesPronoun-Verb AgreementGrammar MistakesOther quiz:
Present Perfect Tense › ViewLiz and Anna ……. to bed. I can’t meet them now.
A. Have
B. Has
C. Had
D. Are
Do vs. Does › View
My sister _________ live in Philadelphia.
A. Don’t
B. Doesn’t
Ryder’s first job as superintendent of the Kadoka Area School District was to make the dress code uniform in all 4 schools.
A. The same
B. Public
C. Proper
D. Lower
Present Tenses › View
Taylor: … your brother talked to you yet? Susan: Yes, he ….
A. Has / did
B. Have / have
C. Has / has
D. Did/did