— Will you be able to come and help us clean the room? 

— ______, but I'm doing my homework. [ ]

A. I'd love to

B. I hope not

C. I do care

D. I'm afraid not

高血压患者拔牙时，麻醉药物中不宜加入的药物是（）

A.抗生素

B.血管收缩药

C.止血药

D.镇静药

E.泼尼松