[ Grammar ]
_______ source of energy is the source that can’t be replaced after use.
A. Renewable
B. Natural
C. Effective
D. non-renewable

Random Topics:
Demonstrative PronounsPast Continuous Tense & Past ModalsTenses of Verbs - UsageTOEFL Adjective and AdverbUsed to - Would - TensesGerunds and InfinitivesFor vs SincePrefixes SuffixesLinking Words and ConjunctionGrammar ModalsOther quiz:
Tenses › ViewWe _______ TV at home this afternoon
A. watch
B. is watching
C. are watching
D. watched
Have to/Has to › View
_____________ you __________________________ (walk) the dog?
A. Do, have to walk
B. Does, have to walk
C. Do, have to walks
D. Does, have to walks
Grammar › ViewWhat …………………… were they to offer you a job abroad?
A. would you do
B. were you to do
C. might you have done
Grammar › View
Choose the adverb
The baby slept upstairs.
_
A. The
B. baby
C. slept
D. upstairs
