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:
Grammar › ViewI was woken up in the middle of the night by the noise next door. The neighbors … party.
A. might have had
B. might have has
C. might had
Conjunctions › View
Choose the conjunction in this sentence: “We can go swimming if the weather is nice.”
A. go
B. swimming
C. if
D. nice
Vocabulary › View 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