Long ago, man used to ______ with his hands but now man is used to ______ with machines, and sometimes a robot is used to ___ instead of people.
.There has been rising demand for grain as _______ industrial material in spite of the nation’s good harvests.
.At the meeting they discussed different ______ to the study of mathematics.
The children were warned of not being too _______ about things you are not supposed to know.
.It was difficult to guess what her _____ to the news would be.
Having been attacked by terrorists,________.