---Excuse me. I’m looking for Be the Best of Yourself.

---Sorry. The book you ask for     out.

A．is selling

B．is sold

C．was selling

D．will be sold

在口内行浸润麻醉时，药物通常注入

A．牙龈表面

B．牙龈深面

C．牙龈 * * 上

D．固有膜上

E．口腔前庭沟黏膜下层内