The idiom(成语)"Mengzi's' mother makes three moves" tells of mother who did all she could to provide the best for her child.( )
A.experienceB.instruction
C.environmentD.information
—Mum, may I draw some flowers on the wall? —Oh, no, dear, you _______. Why not draw your beautiful flowers on the paper?
—I saw Mr. Wang at school just now. --You ____________ make a mistake. He has gone to Shanghai and won’t get back until next Monday.
This book ___ be yours. Look! Here is your name.
– Listen ! Is Professor Johnson giving a report in the hall? – No, it _______ be him. He has gone to America.
You ________ cross the road when the traffic lights are red.