Заполните пропуски в инструкции следующими словами
The Work of the Laboratory Assistant
1. Microscope slides and cover-slips 1_______ into jars of disinfectant solution.
2. You 2_______ labels with the tongue.
3. You 3_______ a laboratory coat.
4. You 4_______, drink or smoke in the laboratory.
must be put
must not moisten
must wear
must not eat