Robots can do many kinds of ______.A.a job B.jobs C.works D.a work
问题描述：
Robots can do many kinds of ______.A.a job B.jobs C.works D.a work
选哪个？为什么？
答
b
Robots can do many kinds of ______.A.a job B.jobs C.works D.a work
选哪个？为什么？
b