Ex 1:
1/ read
2/ wrote
3/ wore
4/ began
5/ made
6/ heard
7/ swam
8/ rode
9/ ran
10/ saw
11/ spoke
12/ told
13/ bought
14/ held
15/ put
16/ had
17/ got
18/ did
19/ won 
20/ came
21/ drank
22/ ate
23/ gave
24/ knew
25/ met
26/ sang
27/ fed
28/ taught
29/ built
30/ was / were
Ex 2:
1/ are
are studying
2/ plays
is playing
3/ stay
4/ will invite
5/ will be
6/ am doing
7/ go
8/ do you play
9/ bought
10/ played - had
11/ will give
12/ stand
13/ eats
14/ got
15/ will help
16/ rains - won't go
17/ did the children do - went
18/ starts - finishes
19/ was - didn't eat
20/ watches
21/ studies - will get
22/ saw
23/ does Nam often do - does
24/ decorate
25/ are the children doing - are cleaning
26/ will help - are
Ex 3:
1/ A → take

1/ The birds are singing at 5 am.
2/ The big dogs are barking at 7 am.
3/ Mrs. Thompson is getting up at 7.20 am.
4/ She is making her son's breakfast at 7.40 am.
5/ The mailman is delivering the letters at 7.50 am.
6/ Mrs. Thompson's son is washing his face at 7.55 am.
7/ The Thompsons family are eating breakfast together at 8 am.
8/ Mrs. Thompson is driving to work in her blue car at 8.20 am.
9/ My classmate is skipping rope in the playground.
10/ My sister is studying in an international school.

I have many birthday presents from my friends.

\(x:\dfrac{1}{5}=7\)

\(x=7\times\dfrac{1}{5}\)

\(x=\dfrac{7}{5}\)


\(x\times\dfrac{2}{3}=9\)

\(x=9:\dfrac{2}{3}\)

\(x=\dfrac{27}{2}\)


\(1\dfrac{3}{7}+x=2\dfrac{1}{5}\)

\(\dfrac{10}{7}+x=\dfrac{11}{5}\)

\(x=\dfrac{11}{5}-\dfrac{10}{7}\)

\(x=\dfrac{27}{35}\)


\(4\dfrac{1}{3}-x=2\dfrac{2}{5}+1\dfrac{3}{5}\)

\(\dfrac{13}{3}-x=\dfrac{12}{5}+\dfrac{8}{5}\)

\(\dfrac{13}{3}-x=4\)

\(x=\dfrac{13}{3}-4\)

\(x=\dfrac{1}{3}\)

- 13/245

=> He hates being stared at.

=> 2x=12
=> x=6

It has two wings. It can sing and fly.

B
B