[ Tenses ]
The greenhouse effect ____ rising temperatures today.
A. is causing
B. caused
C. causes
D. will cause
Select your answer:

Random Topics:
Collective NounsModals TensesVocabulary and GrammarSimple Present - Negative & InterrogativePast Simple & Past ContinuousIndependent ClausesConjunctions & Cohesive Devicestake, make, doMixed ConditionalTenses & Conditional SentenceOther quiz:
Vocabulary and Grammar › ViewWord with sound /j/
A. ground
B. germ
C. gate
D. pig
Grammar › View
Which conjunction should you use to form this compound sentence?
My sister likes chocolate, ___ I like vanilla.
_______
A. but
B. or
