英语：1.改否定句.2.改一般疑问句.3.作肯定回答.4.做否定回答.
replace the words and expressions with those from the text.
1.we (are happy) in our school.___________________________
2.in the evening I feel a little tired._________________________
3.Our school life is very interesting._________________________
4.Boys help people take their bags._________________________
5.Girls help clean the rooms._____________________________