He has four lessons in the morning every day.(改为一般疑问句)
he four lessons in the morning every day?
Helen enjoys (listen) to soft music when she is tired.
We should speak to the old people (polite).
They came up a good idea to keep their classroom clean and tidy.
Changbai Mountain in Jilin Province is a good place to fun.
If you borrow books from the library,give back on time.