[ Vocabulary ]
the ability to be maintained at a certain rate or level
A. energy conservation
B. human impact
C. renewable resources
D. sustainability
E. availability

Random Topics:
Articles & Compound NounsAction vs Linking Verbs/ Verb PhrasesVerb AgreementLinking Words and PhrasesSimple Past ContinuosTenses and QuestionsReflexive Pronouns & Modal VerbsTypes of PhrasesPreposition of PlaceVerbsOther quiz:
Grammar › ViewQ: ________is the largest ocean in the world?
Ans: Pacific Ocean.
A. Where
B. Who
C. Which
D. Why
Present Perfect Continuous › View
I / not / work today
A. I have not been working today
B. I has not been working today
C. I have been not working today
Grammar › ViewChoose the sentence that is written correctly.
A. I am remembering your face!
B. I remember your face!
C. I am remember your face!
Grammar › View
When Paul was at my flat yesterday, he asked if he _______________ use the phone.
A. can
B. could
C. may
D. must
