past continuous followed by past tense

The children ------ television when the light went out. (watch)

(a)  

I ------ on the stool when it broke. (sit)

(a)  

Mrs Pears ------ in town when a thief snatched her purse. (shop)

(a)  

As we ---- in the park, we found a puppy. (jog)

(a)  

As I ----- the house, the postman came. (leave)

(a)  

While John ------ a letter, his sister walked into the room. (write)

(a)  

The maid dropped a plate while she ---- the table. (move)

(a)  

The boy ----- up the tree when a bee stung him. (climb)

(a)  

The dog ----- at the stranger when the policeman arrived. (bark)

(a)  

Mr and Mrs Miller ----- in the park when a boy on Rollerblades ran into them. (walk)

(a)