The author is suggesting do not trust in all the people because at that time, Spies gathered intelligence from letters, newspapers, and interviews with prisoners and deserters.
The author’s primary purpose in this paragraph is to narrate relevan historic facts.
Answer:
1) should
2) must
3) should
4) have to
5) should
6) must
7) should
8) have to
9) should
10) should
11) must
12) should
Explanation:
if you use <em><u>should</u></em> then it's applying that you should do something but you don't have to; not required to do.
if you use <em><u>have</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em> its applying that you absolutely have to do it; required
if you use <em><u>must</u></em><em><u> </u></em> then it's applying that your allowed to do it
Answer:
Closely connected or appropriate to what is being done or considered.
Explanation:
