--- Excuse me, sir. Would you do me a favor?
--- Of course. What is it?
--- I if you could tell me how to fill out this form.
A. had wondered
B. was wondering
C. would wonder
D. did wonder
网友回答
A. had wondered
(答案→)B. was wondering
C. would wonder
D. did wonder
解析：考查时态：句意是;--对不起，先生，你能帮我个忙吗?—当然。是什么？--我想知道你能不能告诉我怎么填这个表格。选B。