No student ______ go out of school for snacks during the break without the teacher’s permission.
The policeman always _____ his post and struggled against the difficulties to protect the safety of the people and their property.
. Tim, better have a good rest now; you do need to _____ your energy for the football match this afternoon.
To land, foreign fishing ships will have to request permission from ports that are able to _____ them.
The dog had such _____to its master that it would not leave him, even when he was dead.
With no better way to express feelings of love and _____ , it' s easy to see why students turn to the flower shop on Teachers' Day.