Economics is the most interesting subject
A. Economics has been the most interesting subject
B. Economics have been the most interesting subject
C. Economics is have the most interesting subject

Random Topics:
Adjectives with -ED and -INGPresent Simple/AffirmativeConjunctions, Interjections and Sentence TypeGerund/ To Verb/ VerbGrammar ElementaryPassive Modals in Different TensesSports VocabularySimple and Continuous TensesGrammar-Present Continuous-Sentence MakingHow often - long - much - manyOther quiz:
Conjunction › ViewChoose the correct conjunction: He will not go to the gym ________ he finishes work.
A. unless
B. while
C. because
D. after
General Knowledge › View
Why does the Earth looks blue?
A. Some blue cloth
B. Some blue glass
C. Due to presence of water on it
D. Due to the sponch
E. ALL OF THE ABOVE
By the first of December this year I ….. here for fifteen years already.
A. work
B. will be working
C. will have worked
D. will work
Tenses › View
I _____ my girlfriend for a couple of years and during that time I … many changes in her personality.
A. Have seen … have seen
B. Have seen … have been seeing
C. Have been seeing … have been seeing
D. Have been seeing … have seen
