[ 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 › ViewDo you like my new _____? It’s from my favourite song.
A. ringtone
B. ring sound
C. ringing tone
Grammar › View
What is an antecedent?
A. A Person, Place, Thing, or Idea
B. An Action Word
C. A word that describes nouns
D. The word the pronoun is replacing
Some 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