—Dad, where on earth did you put my raincoat?—Oh, Jim.I forgot to tell you.It _________ behind your bedroom door.
Waving to her family on the platform, _____.
The novelist knew little about the precious document(文件). _____, he had hardly heard of it before.
Scientists and doctors across the world have done _____ research over the years, hoping to find a cure for cancer.
I don’t think _________ possible to master a foreign language without much memory work.
She has already tried her best. Please don’t be too ______ about her job.