how to answer this po

-Supply the missing letters to form Words related to the topic.

1.S_F_WA_E
2.HA_DW_R_
3._OM_U_ER
4.KEY_ _AR_
5.PR_ _T_R
6.DIG_ TA_C_M_RA
7.MA_BIL_P_O_E
8.FLA_ _DR_V_
9.T_BL_T
10. H_R_DI_K​