It is generally believed that constant reading and comprehending can ______ our mental ability of comprehension.
John opened the door. There _______ he had never seen before.
---I heard that he grew worse after taking the medicine. ---Yes.He was ___________to it.
–--Oh, my God, I’m on my last legs! ----__________. Worry won’t help.
Maggie’s house is next to mine. We see each other _________.
If you take _______ risk of drunk driving, you are at _______ risk.