You must stop and wait for your turn when you see the sign______.A. B. C.
The more you learn, the more ________ you can pass the exam.
--_______ you free tomorrow?—Yes, I am. What would you like me ______?
Shanghai is larger than ________ city in China.
American students spend ________ time _________ homework than Chinese students.
The coat is ________big for you. You’d better take the yellow one.
B. 
C. 
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