[ Vocabulary ]
Carbon dioxide and black carbon, or ______, are two of the most dangerous air pollutants.
A. soot
B. mould
C. mildew
D. asthma
Random Topics:
BASIC GRAMMAR - PRONOUNSDemonstrative Pronouns and Verb TensesModal PerfectFirst ConditionalsPast Continuous and Past Simple TenseDemonstrative PronounsPast ParticiplePassive Modals in Different TensesBasic TensesIN, ON & ATOther quiz:
Grammar › View……………….your time – don’t rush
A. Tell
B. Find
C. Spend
D. Take
Wh - Questions › View
……did you go to the cinema with last week? – My friends.
A. Who
B. Which
C. Whose
D. When
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