Experts said it was that Malaysia Airlines Flight 370(马航370) had changed course and turned back toward Kuala Lumpur(吉隆坡).

re your eyes so red You _______ have slept welllast night—Yeah, I stayed up late writing a report

Would you like to stay for another two days?— Sorry, I ____. One of my best friends is coming to see me.[ ]

My cousin insisted that she ______ to Australia for further studyBut the company refused her application

下列各句中，标点符号使用恰当的一句是（ ）