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Lesson 40
H
e
I
She
has
You
have
I
t
T
h
e
y
W
e
Lesson 41
c) obligation
Lesson 42
c) obligation
c) prohibition
Lesson 43
a) has
b) have
c) have
d) has
e) have
Lesson 44
a) Students have to wear a uniform at school.
b) We don’t have to wash the dishes and clothes with a lot of water.
c) I have to study for exams.
d) You have to take care of the environment.
Lesson 45
a) don’t have to
b) has to
c) have to
d) doesn’t have to
Lesson 46
a) don’t have to
b) must
c) mustn’t
d) have to
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