1.1 is
2 isn't
3 are
4 am not
5 is
6 isn't
7 is
8 am not
9 are
10 aren't/are
11 is
12 is
13 is
14 isn't
15 is
16 am/am not
17 is
18 aren't/are
19 is
20 aren't/are
2.1 you don't know the answer
do you know the answer?
2 he doesn't have breakfast at 8 o'clock
does he have breakfast at 8 o'clock?
3 some schoolgirls wear uniforms
do some schoolgirls wear uniforms?
4 she cuts her husband's hair
she doesn't cut her husband's hair
5 she doesn't do her homework everyday
does she do her homework everyday?
3.1 is teaching
he isn't teaching his son to ride a bike
is he teaching his son to ride a bike?
2 is...wearing/is having
3 am doing
4 isn't working/is swimming
5 are....cleaning/is watering
4.1 are playing
2 reads
3 am doing
4 am eating
5 do you want
6 are watching
7 don't like
8 is sleeping
9 cooks
10 writes
11 doesn't like
12 is listening
13 drinks/is drinking
14 are going
15 does he go
5.2 was
3 were
4 was
5 were
6 was
6.1 weren't
2 was
3 were
4 was
5 wasn't
6 was
7 were
8 weren't
9 was
7.1 went
jack didn't go to paris last summer
did jack go to paris last summer?
2 was
he wasn't absent from class last sunday
was he absent from class last sunday?
3 practiced
they didn't practice english last night
did they practice english last night?
4 saw
jane didn't see you 2 hours ago
did jane see you 2 hours ago?
5 did
I didn't do my homework yesterday evening
did you do your homework yesterday evening?
6 went
7 left
8 was
9 decided
10 heard
11 turned
12 saw
13 came
14 asked