1)

a:belongs

b:is smelling

c:i'm having

d:knows

e:i'm seeing

f:have

g:i'm liking

h:hear

2)

a:am writing

b:am staying

c:go

d:study

e:make

f:aloso take

g:i'm having

h:are attendine

i:are enjoy

3)

1:b

2:a

3:c

4:b

5:c

6:a

7:b

4)

a:to climb

b:to do

c:do

d:swim

e:to go

f:spend

g:to do

h:to do

i:do

j:help

5)

a:to play

b:playing

c:to go

d:to spend

e:to concentrate

f:to listen

g:to eat

h:to make

i:doing

j:to talk

k:making