问题
选择题
Tom is a worker. He _____ in a factory. His sisters _____ in a hospital. [ ]
A. work; work
B. works; works
C. work; works
D. working; working
答案
答案：B
搜题请搜索小程序“爱下问搜题”
Tom is a worker. He _____ in a factory. His sisters _____ in a hospital. [ ]
A. work; work
B. works; works
C. work; works
D. working; working
答案：B
，正电荷
，正电荷
，负电荷
，负电荷