1
2
100

When I was younger I used to go/was going to school by bus.

When I was younger I used to go to school by bus.

100

I didn't finish/wasn't finishing my homework because I didn't listen/wasn't listening when my teacher explained what we had to do.

I didn't finish my homework because I wasn't listening when my teacher explained what we had to do.

200

I wasn't/didn't allowed to watch TV while I used to do/was doing homework.

I wasn't allowed to watch TV while I was doing homework. 

200

I wasn't liking/didn't use to like Maths but now I think it's really interesting. 

I didn't use to like Maths but now I think it's really interesting. 
300
When you were phoning me/phoned me yesterday I used to walk/was walking home from my friend's house.

When you me/phoned me yesterday I was walking home from my friend's house.

300

When we played/were playing our hockey match I was falling over/fell over three times.

When we were playing our hockey match I fell over three times.

400

Last Friday while I studied/was studying, the baby next door cried/was crying. It was very noisy so I had to go to the library in town.

Last Friday while I was studying, the baby next door was crying. It was very noisy so I had to go to the library in town.

400

I was meeting/met my best friend while I used to wait/was waiting for the bus.

I met my best friend while I was waiting for the bus.

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