He was busy writing the story all the morning, pausing __________ to search for the right word.
--- Sally, was ________ problem solved? --- We were trying to think of ________ way out, but it was hard to find one.
The taxi was so slow that we might as well _________ on the bus.
— Remember the first time we meet Jim? —Of course I do. You ________ in the library.
Bank statement helps you__________ where your money is going.
— Have you been to the Great Wall? —Perhaps not in my memory. ________, it might have been during my early childhood.