单项选择题

After being tested in many Ways, this newly-designed machine will ______in the near future.

A．take its place
B．put into use
C．come into use
D．take action
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单项选择题
When I got to the top of the mountain, the sun ______.
A．shone
B．shines
C．has shone
D．was shining
单项选择题
Mother warned ______ the electric lamp.
A．not to touch
B．him not to touch
C．him not touching
D．him not touch
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