---How does Jack usually go to work?

---He _____ drive a car, but now he _____ there to lose weight.

A．used to, is used to walk

B．was used to, is used to walking

C．was used to, is used to walk

D．used to, is used to walking

一次函数y=x+1的图象在（　　）

A．第一、二、三象限

B．第一、三、四象限

C．第一、二、四象限

D．第二、三、四象限