Past simple - past continuous 6 (lv1)

Nam ________ (not eat) breakfast when the doorbell rang.

When the doorbell rang, Nam ________ (not eat) breakfast.

I ________ (not watch) TV when my mom called.

When my mom called, I ________ (not watch) TV.

Mary ________ (not clean) her room when her dad walked in.

Mary ________ (not clean) her room when her dad walked in.

Mary ​ (a)   the cookies when I ​ (b)   her.

• wasn't baking
• visited

When it ​ (a)   , we​ (b)   basketball.

• started raining
• weren't playing

The children ​ (a)   when the thunderstorm ​ (b)   .

(thunderstorm: Cơn giông)

• weren't swimming
• started
• wasn't playing

When we ​ (a)   , the singer ​ (b)   on the stage.

• were performing
• came
• was perfoming