John promised his doctor he ________not smoke，and he has never smoked ever since

It is not how much we do but how much love we put intowhat we do _____ benefits our work most.

It was with the selfless help of our teacher ______ we realized our dream.

On the way to the post office, I heard some children ________the English song.

_____ you ______ the magazine from the library yet-Yes. I _____ it for three days.