SOLUTIONS TO EXERCISES, LESSON 4
1.
c
(para 4-2)
2.
himself
(para 4-3)
3.
e
(para 4-4)
4.
clean; stimulate
(para 4-5a)
5.
a. tips
b. sides
(para 4-7)
6.
c
(para 4-8b)
7.
a
(para 4-8c)
8.
b
(para 4-8a)
9.
e
(para 4-8e)
10.
d
(para 4-8c)
11.
c
(para 4-8f)
12.
b
(para 4-9)
13.
d
(para 4-9)
14.
Erythrosin.
(para 4-10)
15.
a. proximal.
b. dental floss
(para 4-11a)
16.
b
(para 4-11b)
17.
b
(para 4-11b)
18.
c
(para 4-11c)
19.
b
(para 4-11c)
20.
a.
seesaw
b.
four; five
c.
pain
d.
new section
(para 4-12)
MD0513
4-19