[ 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:
Modals › ViewIndah: Why weren’t you at Yanti’s birthday party that night?”
Santi: Oh, I … overtime.
A. must work
B. must have worked
C. should work
D. ought to have worked
E. had to work
Possesive Pronouns and Modals of Ability › View
Lucas played ……… guitar and invited everyone to sing.
A. his
B. he
C. her
D. your
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
