化简-2n-（-3n-1）的结果为（ ）
A．-5n+1
B．-5n-1
C．n+1
D．n-1
-2n-（-3n-1）=-2n+3n+1=n+1
故选C．
- Did you get a job?
--- No, I________, but it’s no use.
A．expected
B．tried to
C．managed to
D．planned
