Grammar Quiz
[ 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:
A  B  C  D  E 


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Active vs. Passive VoiceGerunds & Infinitives + VocabularyPresent Progressive TensePhrasal Verb & Prepositional PhrasePresent Continuos TenseGerunds and InfinitivesArticles & PrepositionPassive Voice and ModalsAdverbs and Adverbial Phrasesa, an, the, zero article

Other quiz:

Passive Voice › View

Mr. Wilson is _________ as Willie to his friend.

A. known

B. knew

C. is known

D. know

a, an, the, Zero Article › View

Are you shopping for ___ health club to join so you can get in shape?
a. a
b. an
c. the
d. no article is needed

Grammar › View

Your library books are overdue. You _____ if you return those books immediately.

A. will not fine

B. will not fined

C. will not be fined

D. will be not fine

Vocabulary › View

What is th outermost layer of the Sun’s atomsphere, located above the chromosphere?

A. Corona
B. Photosphere
C. Chromosphere
D. Troposphere

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