You must stop and wait for your turn when you see the sign______.A. B. C.
—Where's the cake I made this morning? —Weit, mom. Can you make another one for me?
That boy is notto go to school． He is only three years old．
Now old Henry is very sad, so he doesn't want to do.
The little boy is very fateating too much food.
I’m ___ duty today. I must clean the classroom _____ school.
B. 
C. 
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