[ Grammar ]
As fossil fuels are running out, the world is turning more and more to ………. sources of energy, like solar or wind power.
A. exchangeable
B. renewable
C. interchangeable
D. repairable

Random Topics:
Figure of SpeechConjunctions, Interjections and Sentence TypeCompound SentencesPresent Perfect - Just, Already, YetPresent / Future / Present Progressive / non Action VerbsDeterminers & QuantifiersAuxiliary VerbsPresent and Past Perfect TensesPast Tense and Perfect TenseWish SentencesOther quiz:
Grammar › ViewI _____ a cat and two dogs.
A. has
B. have
C. haves
D. hases
Simple Past Tense › View
Simple Past Tense – announce
A. announcer
B. announcing
C. announement
D. announced
Phrasal Verb › ViewIt took him many years to….the shock of his wwife dying.
A. get in
B. get over
C. get on
D. get up
Grammar › View
Which sentence is punctuated correctly?
A. Are you coming, Sam?
B. Are you coming Sam?