BA IS VERY GOOD ______ FIXING THINGS.A. AT B. FOR C. ON D. TO

5. - DE KIEM TRA HK1 AV7 CO PHAN NGHE DAP AN
DE KIEM TRA HK1 AV7 CO PHAN NGHE DAP AN

5. Ba is very good ______ fixing things.

A. at B. for C. on D. to