[ 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:
Vocabulary › ViewThe current _____ makes it expensive for Americans to travel in Europe.
A. departure
B. exchange rate
C. gate
D. take off
Idioms › View
To “edge out” means ___.
a. to move in slowly
b. with the narrow side outwards
c. to force out
My 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