Add spaces: Drinfeld'smainachievementsarehisproofoftheLanglandsconjectureforGL(2)overafunctionalfield;andhisworkinquantumgrouptheory.

Answer: Drinfeld's main achievements are his proof of the Langlands conjecture for GL(2) over a functional field; and his work in quantum group theory.

Add spaces: Butrememberthatjustbecausesomethingimpressespeople,itisnotnecessarilygood.Youneedtolearnthedifference.

Answer: But remember that just because something impresses people, it is not necessarily good. You need to learn the difference.

Add spaces: TheyweremarriedonJune7,1912inBjerrebyChurch,Denmark.Theyhadthefollowingchildren:

Answer:
They were married on June 7, 1912 in Bjerreby Church, Denmark. They had the following children: