His words puzzled me so much that I had a hard time trying to ______ what he really meant.
Who do you think you’d like _____ with you, a boyora girl?
The managers discussed the plan that they would like to see ______ the next year.
Does the way you thought of _______ the water clean make any sense?
The old professor told us every part of the materials should be made use of ______ the power station.
The boss insisted that every minute ______ made full use of ______ the work well.