4. Complete the sentences with the past simple or past continuous. a) My mother (sleep) was sleeping when I (come) came home.
b) Alina (come)
when we (have)
dinner.
c) Nurbek (drive)
fast when the police (stop)
him.
d) It (snow)
when we (arrive)
at the airport.
when he (have)
a shower.
e) It all (happen)
along the street when I (see)
a man on
f) I (walk)
a bench.
her for the first time, she (read)
g) When I (see)
a book in the park.
when a big dog (run)
after me.
at the party, Nurbek and Deniza
i) When I arrive)
(dance)
3) I (do)
k) I (try)
at the door
off, I (work)
When the electricity (go)
computer
h) I (jog)
my last exercise when the lesson (finish)
to fall asleep when somebody (knock)
on the​

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a) My mother was sleeping when I came home.
In this sentence, we use the past continuous tense (was sleeping) to describe an ongoing action in the past (my mother sleeping). We use the past simple tense (came) to describe a completed action in the past (I came home).

b) Alina came when we were having dinner.
Here, we use the past simple tense (came) to describe a completed action in the past (Alina came). We use the past continuous tense (were having) to describe an ongoing action in the past (we were having dinner).

c) Nurbek was driving fast when the police stopped him.
In this sentence, we use the past continuous tense (was driving) to describe an ongoing action in the past (Nurbek was driving fast). We use the past simple tense (stopped) to describe a completed action in the past (the police stopped him).

d) It was snowing when we arrived at the airport.
Here, we use the past continuous tense (was snowing) to describe an ongoing action in the past (it was snowing). We use the past simple tense (arrived) to describe a completed action in the past (we arrived at the airport).

e) It all happened along the street when I saw a man on a bench.
In this sentence, we use the past simple tense (happened, saw) to describe completed actions in the past (it happened, I saw a man on a bench).

f) I was walking in the park when a big dog ran after me.
Here, we use the past continuous tense (was walking) to describe an ongoing action in the past (I was walking in the park). We use the past simple tense (ran) to describe a completed action in the past (a big dog ran after me).

g) When I saw her for the first time, she was reading a book.
In this sentence, we use the past simple tense (saw) to describe a completed action in the past (I saw her for the first time). We use the past continuous tense (was reading) to describe an ongoing action in the past (she was reading a book).

h) I was dancing at the party when Nurbek and Deniza arrived.
Here, we use the past continuous tense (was dancing) to describe an ongoing action in the past (I was dancing at the party). We use the past simple tense (arrived) to describe a completed action in the past (Nurbek and Deniza arrived).

i) When I arrived, they were dancing.
In this sentence, we use the past simple tense (arrived) to describe a completed action in the past (I arrived). We use the past continuous tense (were dancing) to describe an ongoing action in the past (they were dancing).

j) I tried knocking at the door, but it was locked.
Here, we use the past simple tense (tried, was locked) to describe completed actions in the past (I tried knocking at the door, it was locked).

k) I was working on the computer when the electricity went off.
In this sentence, we use the past continuous tense (was working) to describe an ongoing action in the past (I was working on the computer). We use the past simple tense (went off) to describe a completed action in the past (the electricity went off).

l) I was jogging my last exercise when the lesson finished.
Here, we use the past continuous tense (was jogging) to describe an ongoing action in the past (I was jogging my last exercise). We use the past simple tense (finished) to describe a completed action in the past (the lesson finished).

m) I was about to fall asleep when somebody knocked on the door.
In this sentence, we use the past continuous tense (was about to fall asleep) to describe an ongoing action in the past (I was about to fall asleep). We use the past simple tense (knocked) to describe a completed action in the past (somebody knocked on the door).