1) remembered
2) hoped
3) was
4) insisted
5) was
6) was
7) remained
8) was
9) went
10) had asked
11) came
12) joined
13) reading
14) started
15) was
16) went
17) looked
18) saw
19) were nodding
20) was getting
21) talked
22) gave
23) was
24) felt
25) wanted
26) have come
27) will waste
28) whispered
29) will get
30) looked
31) whispered
32) am
33) have
34) will get
35) was
36) were
37) were
38) were
39) asked
40) melted
41) told
42) sparkled
43) glowed
44) asked
45) explained
46) celebrated
47) nodded
48) gave
49) grabbed
50) held
51) was
52) couldn't
53) looked
54) said
55) left
56) blinked
57) occured
58) could
59) received
60) didn't matter
61) saw
62) say
63) doesn't exist
64) looked
65) did not
Historians tell us that the problem of pollution (1) … existed even in
ancient Troy, but it (2) was very simple. The citizens of ancient Troy
(3) to allowed their refuse to accumulate on the floor until there was
such an amount that their doors would not open. Then they simply (4) …
repositioned the doors.
The decrees issued to decrease pollution (5) were recorded as long ago
as the Middle Ages. In England, smoke-abatement law (6) …was passed in
1273, and in 1306 a man (7) was executed for burning coal.
However, the Industrial Revolution changed all prior concepts of pollution.
The introduction of power-driven machinery created a pollution
problem that (8) increased steadily from the mid-eighteenth century
to the present time. The results of industrial pollution (9) are water
and air toxification, respiratory diseases, and even death. That (10) …
prompted the Environmental Protection Agencies to establish laws to
regulate levels of air and water pollution.
