问题补充：
Excuse me, but could you tell me ? I’d like to drop him a line.
A. where is his address
B. where his address is
C. what his address is
D. what is his address
答案：
A. where is his address
B. where his address is
(答案→)C. what his address is
D. what is his address
解析：可联系答.案.网客服索取。
