ноль реакции(as in "я письма пишу – ноль реакции" = I keep writing letters with no response / and getting no response / but there's been no response denghu)
не задумываясь ответили(When we asked Yoko and Airi, two shoppers we met on Alberni Street, what they liked best about shopping in Vancouver, there was no hesitation in their response: "Low prices!" – не задумываясь ответилиART Vancouver)