The janitor(火炉工), _______ in his regular work, _______ some steam immediately the pressure went up too high.
A.absorbed; set off | B.absorbing; gave off |
C.being absorbed; put off | D.absorbed; let off |
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The janitor(火炉工), _______ in his regular work, _______ some steam immediately the pressure went up too high.
A.absorbed; set off | B.absorbing; gave off |
C.being absorbed; put off | D.absorbed; let off |