[ Vocabulary ]
Carbon dioxide and black carbon, or ______, are two of the most dangerous air pollutants.
A. soot
B. mould
C. mildew
D. asthma
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BASIC GRAMMAR - PRONOUNSDemonstrative Pronouns and Verb TensesModal PerfectFirst ConditionalsPast Continuous and Past Simple TenseDemonstrative PronounsPast ParticiplePassive Modals in Different TensesBasic TensesIN, ON & ATOther quiz:
Phrasal Verb › ViewThey __________ a large sum of money from the sale of their old furniture.
A. put by
B. make out
C. come into
D. give away
Conditionals › View
………he stronger, he could lift the shelves.
A. Should
B. If
C. Were
D. Had
Grammar › ViewSome people try to learn new words and phrases ______ heart.
A. with
B. in
C. by
D. from
Grammar › View
Ivan doesn’t like milk, ______ he?
A. Does
B. Doesn’t