Topics: Subject Verb Agreement
The build-up of gases in the air from burning large tracts of forest ______ to global warming.
A. contributes
B. contribute
Select your answer:
Random Topics:
Punctuation and GrammarMust / must notModals "Should"Coordinating ConjunctionGrammar (either..or.. and neither..nor..)Infinitives or GerundsPresent ProgressiveVerb Tense, Pronouns and AntecedentsPrepositions and Phrasal VerbsVerb Tenses (Progressive, Perfect)Other quiz:
Modal Verbs › ViewYou __________ remember to check all your answers carefully.
A. have to
B. can
C. ought to
D. must
Tenses › View
The building……….. ( complete ) by next month.
A. will have been completed
B. was completed
C. completed
D. was completing