—Is there anything I can do for you sir? — A. Perhaps．Go ahead B. No．Take your time C. Ye

问题补充：

—Is there anything I can do for you，sir? — ．

A. Perhaps．Go ahead

B. No．Take your time

C. Yes．You e welcome

D. Not now．Thanks anyway

答案：

A. Perhaps．Go ahead

B. No．Take your time

C. Yes．You e welcome

(答案→)D. Not now．Thanks anyway

解析：此处为肯定和拒绝两种答案，但A项太生硬，C项意思与语境不符，B项Take your time慢慢来与句意不符，答案D符合。