句型转换，按括号内的要求转换下列句型，每空一词。
1.Sometimes you’re supposed to come early.(改为否定句)
Sometimes you           supposed to come early.
2. Mrs.Smith is busy. She is doing her housework now.
Mrs.Smith is           her housework now.
3.Tom visits his grandparents once a week.(对划线部分提问)
           does Tom visits his grandparents?
4.My pen pal is from America.(用Japan改为选择疑问句)
Is your pen pal is from America           ?
5.The teacher said，“Don’t cheat in exams，children!”
The teacher told the children           cheat in exams.