How long has Carlos been in business？A．Four years.B．Eight years.C．Thirteen years.D．Thirty

听力原文：M: Now, then, Mrs. Darcy. How long has this tooth been giving you trouble？W: Well

听力原文：M: Now, then, Mrs. Darcy. How long has this tooth been giving you trouble？W: Well

How long has the woman been working at this job？A．One monthB．Two monthsC．Three monthsD．Fou

Scientists have long been interested in how the deaf process signed languages in the bra

－－－ __________？－－－ Two years ago.A. Where did he goB. How long has he been in AmericaC.

How long has Bryant been wearing No.8?A.Since he