Преобразуйте вопросительные предложения сначала а) в утвердительные, а затем б) в отрицательные. when did stundents come yesterday? a) students came in the evening yesterday. б) students didn`t come in the evening yesterday. 1)were you at the institute last 2) what lectures did he 3) does william often solve such king of 4) do you want to study 5) where did your friend

1you were at the institute last week. You weren't at the institute last week. 2he delivered math lectures. He didn't delivered math lectures. 3 William often solves such kind of problems. William doesn't often solve such kind of problems. 4you want to study economics. You don't want to study economics. 5my friend lived in Spain. My friend didn't live in Spain.