问题
选择题
I kept looking at the man wearing a pair of glasses, wondering ________.
A．whether did I borrow his book
B．where I had seen him before
C．what I knew his wife
D．when had I helped him
答案
答案：B
考察宾语从句：宾语从句的语序是陈述句语序，AD选项都不符合，C项意思不对，句意是：我一直看着带一副眼镜的男子，想知道我在哪儿见过他的。选B。