[ Vocabulary ]
something very difficult and demanding, requiring a lot of effort
A. consecutive
B. rigorous
C. energetic

Random Topics:
Wh- Questions Present Simple TenseGrammar and PrepositionFuture Tense VerbIELTS VocabularyIN, ON & ATPhrase vs ClausePreposition of PlaceAdverb of ConcessionConditionals and WishesPresent and Past TensesOther quiz:
Tenses › View Jun-Sik ….. his teeth before breakfast every morning.
A. Will clean
B. Is cleaning
C. Cleans
D. Clean
Grammar › View
A basketball game _____ in the gym next Saturday afternoon.
A. will hold
B. is holding
C. will be held
D. will be holding
Grammar › ViewMr. Osama said that Hana …………. an intelligent girl.
A. will
B. was
C. is
D. has
Past Tenses › View
Matt ______, while we________ lunch.
A. phoned, were having
B. was phoning, were having.
C. had phoned, had had
D. had been phoning, had been having
