Why does your brother _______ a sad look on his face these days?
------- Excuse me, but could I use your mobile phone for a while? -------. I’m not using it myself now.
This school is _______ for experienced teachers.
_______ to the man’s timely coming, the _____ boy was saved.
The building being built now is said to be ______ for students not for teachers.
Sometimes I cannot but wonder ______ that has made me feel differently from the others.