求下列三个句子的改写.he'sbeensingingforfiveyears（改为同义句）Hebegantosing.Heoftenaskstheteacherquestions.(改否定句）Heoftentheteacherquestions.Katehasalreadyhadlunch.(改一般疑问

Question

求下列三个句子的改写.
he's been singing for five years（改为同义句）
He began to sing ___ ___ ____.
He often asks the teacher questions.(改否定句）
He ___ often ____ the teacher questions.
Kate has already had lunch .(改一般疑问）
______ kate ____ lunch ____?

Answer 1

five years ago
doesn't often ask
has kate had lunch yet