.In the USA, one needs to make a(n) _________before seeing a doctor.
Many people have donated that type of blood; however, the blood bank needs _____.
_______ with care, one tin will last for six weeks.
When deeply absorbed in work, ______ he often was,he would forget all about eating or sleeping.
George said that he would come to school to see me the next day, but he ______.
Jerry did not regret giving the comment but felt ______ he could have expressed it differently.