问题
选择题
He is a bit ill, but he goes to school _____ at home.[ ]
A. instead
B. instead of
C. instead of stay
D. instead of staying
答案
答案：D
搜题请搜索小程序“爱下问搜题”
He is a bit ill, but he goes to school _____ at home.[ ]
A. instead
B. instead of
C. instead of stay
D. instead of staying
答案：D
N2↑+Cl2↑+4R↑+2O2↑，试确定R的化学式[ ]