Past tense with 'when' and 'while'

_________ she opened the door, I was writing.

• What

• When

• While

• Whool

_________ she went, I was eating.

• What

• When

• While

• Whool

__________the teacher came, I was sleeping.

• Whistle

• When

• While

• Where

__________I was cooking. She did her homework.

• While

• When

While I________ , she ______

• ate/playing

• was eating/played

• was eating/she play

• ate/play

When she ________ , I _________

• came/swimming

• came/was swimming

• come/was swim

• swimming/come

While sara _________, she ______ a dolphin.

• saw/ was swimming

• was swimming/saw

• was seeing/swim

• was swimming/see