A. disadvantage B. efficient factor C. advantages D. elements
A. previous B. permanent C. yesterday D. part-time
A. same B. efficient C. expensive D. tedious
A. well B. by piece rate C. by peae work D. for the work
A. voluntary B. electrical C. electric D. vocational
A. uniform B. contract C. certificate D. instructions
A. economically B. efficiently C. error-free D. firstly
A. apprenticeship B. job C. trainer D. college
A. find B. solution C. solve D. repair
A. somewhere B. supportive C. sometimes D. someone