Chuyển các câu sau sang dạng nghi vấn và trả lời ( thì hiện tại hoàn thành )
1, we are visiting our former teacher next sunday.
2, ken isn't studying english now.
3, the school boys are having lunch at present.
4, my mon is doing the gardening now
5, Look! That man is doing the gardening now.
6, Keep silent, please my children are sleeping.
7, the birds are flying in the sky mow.
8, It is raining cats and dogs now.
9, jacky and maria aren't helping their teacher clean the board at the moment.