When deeply absorbed in work, _____ he often was, he would forget all about eating or sleeping.
We ______ the difficulty together, but why didn’t you tell me?
______ at the door before you enter my room, please.
Our friendship _____ quickly over the weeks that followed.
—Have you heard about that fire in the market?— Yes, fortunately no one _____.
Many people have donated that type of blood; however, the blood bank needs _____.