A．applianceB．accessoryC．machineD．mechanismThere is supp……

单项选择题After four years in the same job his enthusiasm finally _________.

单项选择题No one can function properly if they are _________ of adequate sleep.

单项选择题Among all the changes resulting from the _________ entry of women into the work force, the transformation that has occurred in the women themselves is not the least important.