问题
选择题
— Mr. Lee _ to a student when I entered the
classroom this morning.
- He is very patient _ _he is young.
A．talking; but
B．talks; though
C．was talking, though
D．talked, however
答案
C
过去进行时与though的用法。由when I entered判断前半句为过去的动词（过去进行时），故A,B错，根据题意表达的是“尽管他年轻，但是很有耐心。故选择C。