1.   Can you tie your shoelaces by yourself?

2.   David bent down to tie his shoelace.

3.   He was bending down tying his shoelaces.

4.   John waited for her under the pretence of tying his shoelaces.

5.   Kneeling down on the dusty pavement, she made as if to tie her shoelaces.

6.   Once inside the car, he tied a shoelace around her neck and threatened to choke her.

7.   Roger bent to tie his shoelace.

8.   He began to tie his shoelaces.

9.   Bend down and tie your shoelace.