[ Grammar & Vocabulary ]
Tourists should not leave any ______ behind after visiting a national park.
A. pollutants
B. waste
C. fertilizer
D. awareness
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Wish, Unless, If sentencePronoun-Verb Agreement-ed and -ing AdjectivesModal VerbPrepositions of MovementNoun Phrases and Verb PhrasesPronunciation and VocabularyNoun Clauses with THATThe Future Simple TenseComparison of Adjectives and AdverbsOther quiz:
Active and Passive Gerunds and Infinitives › ViewThe government promised _____ proactive about reducing carbon emissions.
A. being
B. to be
C. implementing
Articles & Preposition › View
Is he a clerk? A: No, he’s ____ manager. (There’s more than one manager)
A. No article
B. the
C. a
Idioms › ViewTo “egg on” means ___.
a. to eat enough
b. to encourage
c. to annoy
Grammar › View
It is always interesting ——- people in airports while you’re waiting for a flight
A. being observed
B. observe
C. to have observed
D. to observe