EXERCISE 14. Active vs. passive. (Charts 10-1 + 10-6)
DitecFMns: Complete the sentences with any appropriate tense, active or passive, of the
verbs in parentheses.
In prehistoric times, huge herds of horses (live) lived throughout the
1
Americas. But then, for some unhown reason, they (disappear)
2
completely from North and South America. Even though the early horses (dl)
out in the Americas, they (survive) in Asia.
3 4
Long ago, horses (domesticate)* by central Asian
5
nomads. At first, horses (use) in war and in hunting, and oxen
6
(use) 7 for farming. Later, horses also (become) 8
farm animals.
Horses (reintroduce) into the Americas by
9
Spaniards early in the fifteenth cennuy. Spanish explorers (cume) in
10
ships to the New World with their horses on board. When the explorers (return)
to Spain, they (leave) some of their horses
11 12
behind. These (dewellop) into wild herds. Native American
13
tribes in the western plains (begin) to use horses around 1600. Wild
14
horses (capture) and (tame) for
15 16
use in war and in hunting.^81
In the 1800s, there were several million wild horses in North America. By the 1970s,
that number had become less than 20,000. The wild horses (hunt)
k^17
.$. and (kill) principally for use as pet food. Today in the United
~ .<\ 18
States, wild horses (protect) by law. They (can kiU, not)
19
for sport or profit. What is your opinion?
20
(wild hors, ..d protect) by law?
,+- ,Ls."^21
-*
.h, "'
*People domesticate (tame) snimals, y;
