[ TOEFL ]
Lapis Lazuli, ________ stone, hs been valued for ornamental purposes for more than 6000 years.
A. an opaque deep blue
B. is an opaque deep blue
C. it is an opaque deep blue
D. that is an opaque deep blue

Random Topics:
Parts of SpeechConjunctions - Conjunctive AdverbsGerunds and InfitinitivesPassive Voice with ModalsAdverbial Clause of Cause and EffectImperative SentencesVerb BEGrammar - either...or, neither...norFirst ConditionalGrammar - could / could notOther quiz:
Conjunctions › ViewChoose the correct subordinating conjunction: ‘I will call you _____ I arrive home.’
A. until
B. before
C. when
D. after
Tenses › View
Next month, they ___ a new app for communication.
A. launch
B. will launch
C. launches
D. launched
Grammar Error Correction (Simple Present Tense) › ViewMy sister and I am very busy right now
A. TRUE
B. FALSE
Future Time and Tenses › View
All my friends ____________ to the concert next Saturday.
A. will attend
B. are attending
C. going to attend
