I don't mind ___him the truth as long as it is not too late.A your delaying to tell B.you delaying tellingdelay 后面加什么 是to do 还是 doing

I don't mind ___him the truth as long as it is not too late.
A your delaying to tell B.you delaying telling
delay 后面加什么 是to do 还是 doing

B