Exercise 5

1. good job

2. closed

3. I will

4. busy

5. on the phone 

6. hear you

Exercise 6

1. repeat 

2. contact

3. put you through 

4. wrong number 

5. dial a number 

6. extension number 

7. state 

Exercise 7

1. ASAP

2. ring back

3. on the line 

4. avoid

5. remind 

Exercise 8

a. 1

b. 6

c. 4

d. 5

e. 2

f. 3