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:
Present Perfect Tense › ViewDifferentiate between past simple and present perfect: ‘I ate breakfast’ (past simple) or ‘I have eaten breakfast’ (present perfect)?
A. The past simple ‘I ate breakfast’ refers to a specific time in the past, while the present perfect ‘I have eaten breakfast’ refers to an action completed at an unspecified time in the past.
B. The past simple ‘I ate breakfast’ refers to an ongoing action, while the present perfect ‘I have eaten breakfast’ refers to a completed action.
C. The past simple ‘I ate breakfast’ refers to a habitual action, while the present perfect ‘I have eaten breakfast’ refers to a one-time action.
D. The past simple ‘I ate breakfast’ refers to a future event, while the present perfect ‘I have eaten breakfast’ refers to a past event.
Vocabulary and Grammar › View
. In America they use dollars, so make sure you _____ currency before leaving the UK.
A. exchange
B. arrange
C. hire
D. confirm
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?