[ Grammar for TOEFL ]
_____ of economic cycles been helpful in predicting turning points in cycles, they would have been used more consistently.
A. Psychological theories
B. Psychological theories have
C. Had psychological theories
D. Psychologists have theories
Select your answer:
Random Topics:
Adverb ClausesUnreal ConditionalsComplex SentencesPersonal pronouns + possessive adjectives + Introgative pronounsVocabulary and UsagePresent Tenses and VocabularyAdjectives and DegreesAdjectives with -ED and -INGPresent / Future / Present Progressive / non Action VerbsWish SentenceOther quiz:
Grammar › ViewFarzanah always _________ breakfast before she goes to school.
A. has
B. had
C. have
D. having
Present Tenses: Simple vs Continuous › View
Formulate a question in the present simple tense: “_______ (she/write) letters?”
A. Does she write
B. Is she writing
C. Do she write
D. Does she writes