[ Grammar and Vocabulary ]
I doubt the problem of global warming … been solved fifty years from now.
A. had
B. would have
C. will have

Random Topics:
Present Perfect & Past Simple TenseNarrative Tenses & ConditionalsPhrasesRecount Texts and TensesQuantifiers, Countable and Uncountable NounsWas & Were QuestionsPRESENT SIMPLE - CHILDRENSimple Present - Negative & InterrogativeCommasPrepositions of Time, Place, and MovementOther quiz:
Tenses › ViewTina has signed up for the online English course. Her lessons _________ every day at 10:00.
A. will start
B. start
C. are starting
D. starts
Modals › View
She ___ apologize for her behavior.
A. can
B. would
C. ought to
D. might
Second Conditional › ViewIf I ………………….. rich, I’d spend all my time travelling.
A. am
B. was
C. be
D. were
Grammar & Vocabulary › View
I have too many clothes. There is not enough space ______ the cupboard.
A. in
B. on
C. at
