[ Conjunction ]
Pick the conjunction that completes the sentence: “I will call you ____ I arrive at the airport.”
A. when
B. because
C. and

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IELTS Vocabulary › ViewIf something such as a machine or an industry has zero emissions, it does not release any harmful substances into the atmosphere.
A. estimate the cost
B. zero emissions
C. harness energy
D. renewable energy
Past Tenses › View
In which tense do we often use expressions like “by the time” and “already”?
A. Past Simple
B. Past Continuous
C. Past Perfect Simple
D. Past Perfect Continuous
Homonyms › ViewHer hair was thick and ___ rather than thin and fine.
a. coarse
b. course
Modal Verbs › View
You ___ try your best in the competition.
A. can
B. should
C. might
D. would
