The essay I wrote on Wednesday was full of good words and phrases. Can you remember the missing words in the phrases below?
1. medicines are ______ tested on animals
2. cleared for ______ use
3. a limited ______ of animal experimentation
4. clear ______ arguments
5. a common ______ of this practice
6. the ______ of a drug can be measured
7. subject animals to ______
8. all creatures should be ______
9. the benefits do not ______ the suffering
10. alternative ______ of research
11. suffering on the ______ of mice and rats
12. may be a necessary ______