Simple or Continuous
I ____ (watch) television when he arrived.
PAST CONTINUOUS (was watching)
To do...
DID
I swim in the pool everyday.
I SWAM in the pool everyday.
They eated pizza yesterday.
They ATE pizza yesterday.
I was watching a movie when I ____ (notice) him standing outside.
PAST SIMPLE (noticed)
To eat...
ATE
The chef cleans his kitchen.
They was taking an exam when the bell rang.
They WERE taking an exam when the bell rang.
I _____ (see) a celebrity when I was shopping yesterday.
PAST SIMPLE (saw)
To drink...
DRANK
The caterpillar becomes a butterfly.
The caterpillar BECAME a butterfly.
I graduaded from university last year.
I graduaTed from university last year.
She arrived when I _____ (have) a bath so I couldn't answer the door.
PAST CONTINUOUS (was having)
To bring...
BROUGHT
I don't know the answer.
I DIDN'T know the answer.
I slept when suddenly the doorbell rang.
I WAS SLEEPING when suddenly the doorbell rang.
I _____ (sit) in a cafe when you _____ (call).
I (WAS SITTING) in a cafe when you (CALLED).
To be...
I cough when there is smoke in the room.
I COUGHED when there WAS smoke in the room.
They ran to school earlier this morning.
NO ERROR