下列对《滕王阁序》文中典故的分析，不正确．的一项是（ ）
Don’t cross the road when the traffic lights are red.– .
Have you decided ______ the color of your new car?
Is Paul playing basketball for his school?—Well,he ____.But he has given it up and switched to playing volleyball.
Only then _________the importance of English grammar.
