某孕妇第一胎因出生时重度窒息死亡，现孕第二胎。在询问病史时，应注意下列母亲的哪项情况与新生儿窒息发生有关（）

A.母有严重贫血

B.母孕期营养过剩

C.母有慢性咳嗽史

D.母曾有乙肝史

E.母有先兆流产史

— Mike, what did our monitor say just now?

—Every student as well as teachers who are to visit the museum _____ asked to be  at the school gate before 6:30 in the morning. 

A．am

B．are

C．were

D．is