[ Present Tense ]
I ______ and my legs are really tired now.
A. am cycling
B. have been cycling
C. have cycled
D. am cycling

Random Topics:
Present Tenses and VocabularySynonyms and VocabularyAdverb Of PlacePreposition of TimeDefinite and Indefinite ArticleAdverbial ClausesPast Perfect TenseApologizingAdjective OrderFrequency AdverbsOther quiz:
Grammar › ViewMy bookcase, …… in my room, is stuffed with old books.
A. whose
B. which
C. that
D. who
Grammar Pronoun and Singular Plural Noun › View
We saw many empty ________ in the storeroom just now
A. boxs
B. boxies
C. boxes
D. box