[ 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:
Adjective vs. Adverb › ViewJoanna sings ___.
a. awful
b. awfully
Linking Verbs › View
Did you feel the rabbit’s soft fur?
A. Action Verb
B. Linking Verb
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