[ Grammar ]
Oil shale is a soft, fine-grained sedimentary rock _____ oil and natural gas are obtained.
A. from
B. is from
C. is which
D. from which

Random Topics:
Auxiliary WordsComparatives ( adj/ adv)Relative & Interrogative PronounsPresent Perfect SimpleNounsGrammar, Literature, and VocabularyGrammar & VocabAdverbs of Frequency & Simple Present TenseGrammar and PrepositionsSimilesOther quiz:
Phrasal Verb › ViewWhat does “take off” mean?
A. put on clothes
B. remove clothes
C. delay
Modal Verbs › View
“I am looking for someone to help me get my car out of the snow”.
“I … be glad to help you”.
A. may
B. need
C. would
D. have to
Articles › ViewLing is one of the hero that must have … Blue buff to enhance their user’s skill
A. a
B. an
Phrasal Verbs › View
Extension 286? I’ll ______ .
A. put you through
B. get you through
C. come you through
D. break into you
