It wasn’t until dark _________ he found _________ he thought was the correct way to solve the problem.
Strangely, some people find that they can smell one type of flower but not another, while others are _____ to the smells of both flowers.
The teeth are _____ , and my grandmother often takes them out to wash them and then put them back.
The government had to _____ private houses to make room for new blocks of apartments.
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.