He began to make a living ____ the age 14.
A: at
B: in
C: by
D: on
A: at
B: in
C: by
D: on
举一反三
- He began learning English（）the age of five. A: on B: at C: in
- Lincon began to work when he was 14. ______ Lincon began to work.
- He began to work there . A: on his fifty B: at age of fifty C: when he fifty D: in his fifties
- _____he began to make friends more easily.
- He began to work there in _______ . A: his fifty B: his fifties C: age of fifty