What should come next in the following letter sequence?

A A B A B C A B C D A B C D E A B C D

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

B, D, H, P, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

YXW, TSR, NML, ?

Which set of letters when sequentially placed at the gaps in the given letter series shall complete it?

p_rpq_rp_r_r

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

YZ, GH, OP, WX, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

DW, FY, HA, JC, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

VT, RP, NL, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

DFI, JNS, TZG, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

ML, HG, CB, ?