1. The patient’s health felled to such an extent that he was put into ______ care.
2. I’m sorry ______ so long. I forgot to tell you in advance where I had been.
A. to keep you wait
B. to keep you waiting
C. to keep you waited
D. to have kept you waiting
It turns out that peculiar way of conducting the experiments may have led to misleading interpretations of what happened.