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Jugar Test
1. 
Students __________ use their phones in classrooms.
A.
mustn't
B.
don't have to
2. 
I'll be late tomorrow. I _______ go to the doctor
A.
mustn't
B.
have to
3. 
You worked all day. You ______ be tired.
A.
must
B.
can
C.
may
4. 
________ you turn the volume down?
A.
May
B.
Can
C.
Do
5. 
That _________ be Sue's umbrella, but I'm not sure.
A.
may
B.
has to
C.
have to
6. 
I __________ go the party but I haven't decided yet.
A.
can't
B.
might
C.
may
D.
can't
E.
might
F.
may
7. 
Sorry, that subject is boring. I __________ concentrated.
A.
mustn't
B.
can't
C.
can't be
8. 
This information _________ be correct. Please check it.
A.
can
B.
might
C.
can't be
9. 
You never know. Tomorrow _________ be a better day.
A.
must
B.
may
C.
can
10. 
You ___________ have so much ice cream. It's not good for you
A.
don't have to
B.
shouldn't