某历史课上,教师引用了一个观点:“德意志帝国的政治制度是一种不彻底和不完善的代议制。”请你判断,下列各项表述中不能证明上述观点的是:
These machines_____in their factory by themselves last year.( )
make
made
are made
were made
Listen! The birds ______ in the trees outside our school.( )
sing
are singing
sang
were singing
Lisa made so many mistakes in her homework, because she didn't do it ______enough.( )
carefully
busily
quickly
warmly
We have wider____in our village, so we can go out more easily now.( )
houses
roads
schools
hospitals
I enjoy talking with my classmates_______our way to school.( )
on
at
in
under