[ Vocabulary ]
The ___ caused by burning fossil fuels has become a significant global issue.
A. carbon footprint
B. language barrier
C. compost
D. single-use plastic

Random Topics:
Prepositions & Modal VerbsModal SpeculationQuantifies and Modals of DeductionCommas and Subordinating ConjunctionsComparatives and Past Perfect TenseHave to / Do not have toPresent Perfect Negative and InterrogativePresent Perfect SimpleSentence Structure and PunctuationThird ConditionalsOther quiz:
Prepositions and Prepositional Phrases › ViewWhich sentence does NOT contain a prepositional phrase?
A. In the morning, we go for a walk.
B. She is interested in learning Spanish.
C. They laughed at the joke.
D. She can run very fast.
Grammar › View
I ….. to the shop yesterday.
A. had gone
B. have gone
C. went
D. had been going
Grammar › ViewFill in the blanks with the correct verb form. Either the manager or the employees ___ attending the meeting.
A. is
B. are
C. has
Vocabulary › View
Music machine American Thomas Edison invented the phonograph, and made a ____________ of the nursery rhyme ” Mary had a little lamb”.
A. record
B. recordings
C. recorded
D. recording
