Page 23 - English For Nursing

3. To dilute a concentrated disinfectant, we have 5. Because disinfectant do not deactivate germs
to precisely refer to … right away, we must …

A. label instructions. A. leave the surface wet for a while.
B. control systems. B. make contact with the wet surface.
C. recommended training. C. dry the surface right after disinfecting
it.
4. To wipe the disinfect surface with a cloth, first
we must … 6. To clean floors and other large areas, we need
A. spray the surface with the solution. to …

B. dampened the cloth with the A. use concentrated disinfectant
disinfectant. B. ready-to-use disinfectant.
C. cover the floors with microfiber mop. C. disposable disinfectant.

7. To prevent germs from spreading, we need to

…
A. focus to facilitate many different
hygiene needs.
B. focus on some specific diseases like
cold and flu.
C. focus on frequently-touched surfaces.

Modals of obligations

Must: Used in rules, and to say when things are necessary.

We must follow the instruction to use disinfectant effectively

We must not keep disinfectant near to edible objects.

Have to: used to talk about things that other people oblige us to do.

We have to clean the door handles regularly.
We don’t have to change sheets every day.

Need to: used to say it is necessary to do something.
We need to wash our hands after using the toilet.
We don’t need to combine two types of disinfectant to clean a surface.

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