As nobody here knows what’s wrong with the machine, we must send for an engineer to the problem.
A. raise
B. face
C. present
D. handle
网友回答
A. raise
B. face
C. present
(答案→)D. handle
解析：考查动词：A. raise提出，饲养B. face面对C. present呈现D. handle处理，句意：没有人知道机器怎么了，我们必须派个工程师解决问题。选D。