小蓟的功效是

A．凉血止血，解毒消痈
B．凉血收敛，止血疗疮
C．凉血止血，解毒敛疮
D．凉血止血，解毒利尿
E．凉血止血，清热利尿

I didn't see Laura at the party last night. Do you know _______? [ ]

A. why didn't she come

B. what happened

C. when would she arrive

D. where she has been