1、come at once
2、get up
3、tried and stood up
4、am sure of
5、slipped out of
6、Make sure
7、fell from
8、catch the bus
9、hurt himself
10、fell downstairs
1、come at once
2、get up
3、tried and stood up
4、am sure of
5、slipped out of
6、Make sure
7、fell from
8、catch the bus
9、hurt himself
10、fell downstairs