he was reading when his mother came back.→He _____ _____reading when his mother _____back home.1)1)改为否定句→_____ he reading when his mother_____back home?(改为疑问句)
问题描述：
he was reading when his mother came back.→He _____ _____reading when his mother _____back home.1)
1)改为否定句
→_____ he reading when his mother_____back home?(改为疑问句)
答
He wasn't reading when his mother came back.
Has he reading when his mother came back?
答
was not came
was came