It’s no use _______ so much money onclothes

How old are you, madam?— If you _____ know, I’m twice my son’s age. [ ]

._____ you arrive in Ireland, you willquickly find yourself on the beautiful country roads.

It rained heavily yesterday. Did you get wet ?— Quite lucky, ______ got on the train when it poured down.

How ___Mike have refused such a good opportunity to go abroad for further study?