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NIACL Model Paper 8 with solutions for free online practice

Directions (1-5) : Each sentence below has two blanks, each blank indicating that something has been omitted. Choose the set of words for each blank which best fits the meaning of the sentence as a whole.

Question : 5

Total: 100

It ______ been estimated thatthere may be many millions of species of plants, insects and microorganisms still undiscovered in tropical rainforests.

have
will
should
has
shall

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