[ Grammar ]
What does the word necessary mean in the sentence:
Water is necessary because it helps keep things alive.
A. needed
B. nice to have
C. not needed
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Grammar › ViewWhen playing or swimming in the pool, children ____ be accompanied by their parents.
A. should
B. must
C. don’t have to
D. have to
Grammar and Vocabulary › View
Zhi Li’s friends __________ the bus to school every morning.
A. take
B. took
C. takes
D. taking
Tenses › ViewRecently, the work has been ____ by Dono.
A. do
B. did
C. done
D. doing
Tense,noun,preposition,quantity › View
A: “Are you thirsty”?
B: “…….. at all.
A. None
B. No
C. Not
D. Neither