[ 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 › ViewIf I _____ you I would start going to bed earlier so you are not tired in the morning.
A. we’re
B. were
Grammar › View
Paul______, but he’s cooking in the kitchen.
a. are reading
b. is not reading
c. reading
d. reads
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
