[ Vocabulary ]
We need to use sources of ___ which are environmentally friendly.
A. energy
B. products

Random Topics:
Similes and Body IdiomsCommunicative GrammarConditional ClausePossessive Nouns with Apostrophes and PronounsGrammar and SyntaxFirst ConditionalDescriptionsTransitive or Intransitive VerbsNoun Phrases and AdverbialsConditional 0Other quiz:
Grammar › ViewHe likes things _____ are very expensive!
A. they
B. which they
C. which
Prepositions › View
What aspect …………… learning English do you find difficult?
A. in
B. at
C. on
D. of
Adverb › Viewmore quickly
A. positive
B. comparative
C. superlative
Vocabulary › View
to dig out and remove
A. Excavated
B. Perimeter
