They've kept up a friendship with the teacher whom they were at school _____ twenty years ago.
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.
There is ____ Mr. Smith at the door who wants to speak to you.
. To make sure that he was at home, I called him up ____ . A. by chance B. in general C. in particular D in advance
In face of ____ failure, it is the most important to keep up ____ good state of mind.