a rocky sandbank or sandbar lying just below the surface of a waterway
A. submerge
B. riffle
C. limber
D. resistance

Random Topics:
Time ExpressionsPhrases and TensesConditional and SubjunctiveComparisionVocabularyPreposition and ConjunctionAdjective, Adverb, and Noun FormsPrepositions and Prepositional PhrasesAnalogyTransitionsOther quiz:
The First Conditional Sentence › ViewWhich sentence is NOT correct?
A. If you don´t study for the test, you will get a bad grade.
B. You won’t lose any weight if you keep eating junk food.
C. If you will study for the test, you will get good grades.
Present Tenses › View
. Choose the correct passive voice form: The artist painted a beautiful portrait.
A. The artist was painting a beautiful portrait.
B. A beautiful portrait is painted by the artist.
C. The artist paints a beautiful portrait.
D. A beautiful portrait was painted by the artist.
Tenses › ViewThey are watching a movie tonight.
The verb of the sentence is …….
A. They
B. are
C. watching
D. a movie
E. tonight
Modal › View
You _____ connect to the internet to send an email.
A. have to
B. should
C. must
