It’s suggested that vehicle taxes should be set ____ on how dirty the car’s exhaust is, with no tax ___________ on the most environmentally friendly one.
Life is like _________ ocean; only ________ strong-willed can reach the other shore.
The two girls are so alike that strangers find________difficult to tell one from the other.
The manager had fallen asleep where he_______,without undressing.
Give yourself 10% of________is left for your work and let me have the rest.
The school has developed an online system________ students can choose their own teachers.