请选择DCBA/I+l2{6F5R5a7EYou don’t know how to do it, you may come and ask me _____..t.Q2a+C-u.r(d:B4x
A.help.t.Q2a+C-u.r(d:B4x
B.to help.t.Q2a+C-u.r(d:B4x
C.for help.t.Q2a+C-u.r(d:B4x
D. for helping.t.Q2a+C-u.r(d:B4x