I had been so _________ with my work that I forgot to buy a gift for my daughter’s birthday, which I had promised to.

Our maths teacher set so difficult an examination problem ______ none of us worked out.

______ in Nanjing

The road ________ for vehicles is under repairDrivers are required to take some other routes [ ]

y don’t change the way they’re working on theissue, the result willturn outto be just the opposite of their wish.