[ Grammar ]
Be careful when you walk on the ______.
A. tip
B. tail
C. stairs
D. square
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Maritime Vocabulary and GrammarPresent Perfect Simple & Present Perfect ContinuousAlthough, Though, In spite of, DespiteMixed ConditionalNounsPast Continuous TenseSo Such Enough TooLanguage Features of an Opinion ArticleAdverbs or AdjectivesVocabulary : Coming & GoingOther quiz:
Modal Verbs › ViewYou … wash your hands before eating.
A. can
B. must
C. shouldn’t
Subject-Verb Agreement › View
Turtles are unique; each (has, have) eight cervical vertebrea, compared with seven of most mammals.
A. Has
B. Have
a vertical list or row of words or numbers
A. complete
B. column
C. competition
Grammar › View
For most people, the United States ________ still the strongest country in the world.
A. is
B. are
C. do
D. does