The National Aeronautics and Space Admin...

The National Aeronautics and Space Administration’s (NASA) Viking Mission to Mars was(1).......... of two spacecraft. Viking 1 and Viking 2, (2)............. consisting of an orbiter and (3).......... lander. The primary objectives (4)............ to obtain images and samples(5)............. the Martian surface andsoil.
Select the most appropriate option that will fill in the blank number 4.

was

were

has been

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In the following passage some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each number. Passage: Settlements are (1)............. where people build their homes. (2)............. human beings lived on trees and (3)............. caves. When theystarted (4)........... crops it became (5)......... to have a permanent home. Select the most appropriate option that will fill in the blank number 1.

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