The twins were so much alike that we had great trouble ________one from the other.
It is not profitable to provide bus services in districts where the population is widely _____.
He _____ the place where he had been bitten by an insect.
Trains stop here in order to _____ passengers only.
There was a good _____ of the countryside from the front of the bus.
And you find that you're not to be _____ with a position of real responsibility.