_____ is known to us all is that the old scientist, for _____ life was hard in the past, still works very hard in his eighties.
—Is it OK that I sit here? —Come a little ____ to me. I have something important to tell you.
Most senior high school students are working hard day and night to pass the college entrance examination, gaining ____ to a university.
____ difficult the work may be, we must go all out to finish it ahead of time.
What worried the child most was ____ to visit his mother in the hospital.
The baby cried again. The young mother felt very ____ and her husband wore ____ expression on his face, too.