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SEATWORK#5 Complete the following sentences by using the appropriate modal of obligation. Write the letter of your answer.
3. Passengers ___ fasten their seat-belts.
A. must
B. should
C. need to
SEATWORK#5 Complete the following sentences by using the appropriate modal of obligation. Write the letter of your answer.
7. I think you _ tell your mom about it.
A. must
B. should
C. need to
Do you want me to call your parents so they .......... pick you up?
must
can
can't
Soldiers ............ obey orders.
must
mustn't
can
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