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UNIT 6 GRAMMAR: OBLIGATION AND PROHOBOTION
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_____ TALK IN CLASS WHEN YOUR TEACHER IS TEACHING. A. MUST B. DON'T C. HAVE TO
B
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TO SAVE THE EARTH, WE ___ PROTECT THE PLANTS AND TREES. A. HAVE TO B. DON'T C. MUST D. BOTH A AND C
D
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STUDENTS _____ WEAR VINSCHOOL UNIFORM TO CLASS.
HAVE TO
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_______ bottles and cans into the sea. a. We must throw b. don't throw c. Don't clean
B
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____ LEAVE YOUR WORKSHEETS ON THE FLOOR. A. DON'T B. CAN'T C. MUST
A
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___ POLLUTE THE AIR IF YOU WANT TO BE HEALTHY.
DON'T
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YOU ___ USE PHONES IN CLASS.
CAN'T
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YOU _____ COPY YOUR FRIENDS WHEN YOU ARE HAVING A TEST. A. MUST B. HAVE TO C. CAN'T
C
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WRITE YOUR ANSWER ON MINI BOARD. ___ RUN OR TALK TOO LOUD IN THE LIBRARY.
DON'T
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WHALES ARE IN DANGER. WE _____ PROTECT THEM.
HAVE TO
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Okay!
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