Topics: 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:
Lexico and GrammarFigurative LanguageArticles and PronounsAuxiliary Verbs, if, unless and ModalSo Such Enough TooVerbs + Infinitives / GerundsPresent simple, Present continuous, Singular, PluralTenses for HospitalityPresent Perfect, Present Simple, Present ContinuousZero & First ConditionalOther quiz:
Future Continuous, Future Perfect and Future Perfect Continuous › ViewWhich tense do we use to talk about a completed action in the future
A. Future perfect continuous
B. Future continuous
C. Future perfect
Future Tenses › View
I’m going to learn some Italian before our summer holiday.
A. An arrangement
B. An intention / A plan
C. Timetable / Schedule