Read the following line: Three viruses caused polio, and a vaccine had to be effective against all of them.

In this context, the word effective means

A. neutral
B. successful
C. theoretical
D. virtual

Which of the following is not prohibited by georgia law? a. crossing a dividing section, barrier, or unpaved strip, which separates two roadways   b. coasting with the gears or transmission of the vehicle in neutral when traveling on a downgrade   c. entering or leaving any controlled-access (interstate) roadway at authorized entrances

What is a verb infinitive and what does is mean to conjugate a verb?

How many voices do latin verbs have? a. two b. four c. six d. eight