I doubt the problem of global warming ... been solved ... | GrammarQuiz.net

Topics: Grammar and Vocabulary

I doubt the problem of global warming … been solved fifty years from now.

A. had

B. would have

C. will have

Select your answer:

Random Topics:

Infinitives and Gerunds Auxiliaries Verb -Ing and Infinitive Verb Patterns Verb Forms Correlative Conjunction & Complex Sentences Modals Tenses Simple Present and Present Continuous First and Second Conditional Gerund and Infinitives Adjective Clause

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Past and Perfect Tenses › View

She ______ (finish) her homework before dinner.

A. finishes

B. finished

C. have finished

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This story is _________ than the other one
A. interesting
B. more interesting
C. interestinger
D. more interst

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