Does the verb was agrees with the subject? three employees from our company and one from our competitor was fired.

NO

Explanation:

According the subject and verb agreement rules, a singular verb must have a singular verb and a verb in plural form must have a plural verb. Thus, in this question the subject, which is in plural form, EMPLOYEES agrees with a plural verb, which is WERE and not the singular verb, WAS.

what was the

1.the hosts on two opposing mountains stood,  

2.thick as the foliage of the waving wood;  

3.between them an extensive valley lay,  

4.o'er which the gleaming armour pour'd the day,  

5.when from the camp of the philistine foes,

6. dreadful to view, a mighty warrior rose; in the dire deeds of bleeding battle skill'd,