请阐述建筑安装工程费按照费用要素划分,由那几部分组成?
In vocational schools, not only knowledge but also skills __________ taught.
A. am
B. is
C. are
They usually __________ each other in the past, but now they __________ quite well.
A. quarrel with... get along
B. quarreled with... get along
C. quarreled with... got along
Recently the Chinese government____________ to encourage people to do waste sorting.
A. is working hard
B. are working hard
C. will work