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Miss Herrera: Yes, there is one. Here you are, put on it. At the end of the class
you
must
give me back the lab coat. And remember, all the
students
must
wear the adequate clothes when you are in the
laboratory.
Laura: Thank you Miss.
Write
3. Write True or False.
a) Laura must wear a lab coat in the laboratory.
______________
b) Miss Herrera mustn’t wear a lab coat in the laboratory.
______________
c) Students must wear shorts and T-shirts in the laboratory. ______________
d) It could be dangerous if you don’t wear the
adequate clothes in the laboratory.
______________
e) Students must play soccer in the laboratory.
______________
f) Laura mustn’t forget the lab coat.
______________
Think
4. Look at the following information and write the rule.
Pronouns: I, You, He, She, It, They, We, You
I must
clean my bedroom.
You mustn’t
litter.
Laura must
wear a lab coat.
RULES IN THE LAB
9
Each student must wear
a lab coat.
9
Students must be on
time.
9
Students mustn’t play in
the laboratory.
9
Students mustn’t touch
the materials in the
laboratory
with
out
permission
from
the
teacher.
must not = mustn’t
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