[ Vocabulary ]
If something is ________, it is difficult and takes effort to do.
A. interest
B. agree
C. discover
D. challenging
Select your answer:
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Present Perfect and Past TensesArticle and Order of AdjctivePrepositions of Location, Movement and TimeGrammar of Conjunctions and PrepotitionsPresent/Past/Future Continuous TenseVerbs + Infinitives / GerundsCommas and Subordinating ConjunctionsSubject-Verb AgreementTenses PracticeAuxiliary Verbs (be, do, have)Other quiz:
Grammar › View(Is there / Are there) anything for dinner?
A. Is there
B. Are there
Grammar › View
These two things are _____ same.
A. a
B. an
C. the
D. X