[ Grammar ]
are forms of carbon has been known since the late 18th century.
A. Diamonds
B. Diamonds, which
C. Because diamonds
D. That diamonds
Select your answer:

Random Topics:
IntermediatePresent Perfect vs Past SimpleModal PossibilitiesPast simple - Irregular VerbsAuxiliary WordsGrammar and UsageParticiple AdjectivesSimple Past vs Past Continuous TenseQuantifies and Modals of DeductionSimple Compound and Complex SentencesOther quiz:
Grammar › ViewI don’t want to be here… I want to be…:
A. on home
B. in the home
C. at home
D. inside my home
Grammar › View
Andrew did no revision before the test but he passed. I think he _____________________ cheated.
A. should have
B. might have
C. couldn’t have
D. need have
