[ Vocabulary ]
The water _______ in nature ensures a continuous supply of nutrients to aquatic ecosystems.
A. challenge
B. hardship
C. despite
D. cycle
Select your answer:
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Prepositions › ViewA sentence cannot have an indirect object without a direct.
A. True
B. False
Verb Forms › View
Fill in the blank with the appropriate present tense form of ‘to be’: ‘You ___ my best friend.’
A. am
B. be
C. is
D. are