1. Choose the sentence in which the subject and verb agree.
a. Self-interest governs most decisions.
b. Self-interest have governed most decisions.
c. Self-interest govern most decisions.
d. Self-interest do govern most decisions.


2. Choose the sentence in which the subject and verb agree.
a. Several burros walks gingerly down into the canyon.
b. Several burros walk gingerly down into the canyon.
c. Several burros is walking gingerly down into the canyon.
d. Several burros has walked gingerly down into the canyon.

1 a, because self-interest is a single thing (one) so it governs.
2 b, because burros is plural, more than one. Burros walk.