[ Grammar ]
The bark of some species of oak trees yields a substance used in —- leather.
A. treating
B. to treat
C. its treatment
D. it treats

Random Topics:
Zero and First ConditionalsPossessive Adjectives VS Possessive PronounsReported Speech and SubjunctivePaired ConjunctionToeic VerbSynonymsState Verbs and Action VerbsPresent Simple TenseActive and PassiveIntermediateOther quiz:
Grammar › ViewWhich correctly identifies the tense of the underlined word?
I will attend a concert tomorrow.
A. past
B. present
C. future
Vocabulary › View
What is the definition of irascible?
A. easily angered
B. irritable
C. ill-tempered
D. easygoing
Grammar › ViewWhich word belongs in the blank: If I can’t have the chocolate bar, ______ I’ll just have hot chocolate instead.
A. than
B. then
Comparative Adjectives › View
London is _________ than Glasglow.
A. more busy
B. busier
C. busyer
