[ Grammar ]
Using it wisely, leisure promotes health, efficiency and happiness
A. If I could have known about
B. If I would have known about
C. Had I known about

Random Topics:
Future Perfect TenseTypes of PhrasesPassive Voice - Present Simple and Past SimpleModals: Possibility, Necessity, ExpectationMixed ConditionalConditional Sentence 0, 1Grammar - Countable/ UncountableConditional TensesComparative & Superlative AdverbsProgressive Perfect and Simple Verb TensesOther quiz:
Clauses and Conjunctions › ViewConstruct a complex sentence using: ‘He will play soccer’ and ‘unless it rains.’
A. He will not play soccer if it rains.
B. Unless it rains, he will not play soccer.
C. He plays soccer when it rains.
D. He will play soccer unless it rains.
Gerund & Infinitive › View
He asked me how …. (go) to the zoo
A. to go
B. going