问题

_______he is very old, he works very hard. — Wow, great. I should learn from him.
A:Although
B:However
C:ause
D:So
B:However
C:ause
D:So
正确答案是:
同类题型
It was in the street ______ I met John yesterday
On the chairs _________ , who had come to Dalian looking for jobs.
Could you please have a walk with me—Sorry, I _______. I have something important to do now.
Though _____ in the accident, the bus driver did all he could to help the passengers to safety.