In this task, you're given a context passage, followed by a question that needs to be answered. Based on the paragraph, you must write unambiguous answers to the questions and your answer must refer to a specific phrase from the paragraph. If multiple answers seem to exist, write the answer that is the most plausible.
--------
Question: As is so often the case , we first directed to the " pop - rivets " , and then got the " I haven't seen those in ages " treatment from the assistant . We bought some flat headed nails and washers to fit them , which is a substitute that I've used in the past . We were also picking up some computer parts , but when we arrived at the shop , first there was a problem with the payment which was quickly resolved ( we were just collecting not paying ) , then the parts were not in the shop ! Whilst waiting , we went across the road to a Thai restaurant for their " set lunch " . 
Question: What's a possible reason they bought some flat headed nails and washers ?

Answer: Because they needed to build or repair something .


Question: I felt very hungry so I looked in my fridge for something to eat. A hot dog package caught my eye. It looked tasty to eat and thought it could curb my hunger.  I took out the package and read the instructions for cooking. There are a few different ways to cook hot dogs, microwave, boiling on the barbeque or grill. I decided since I was so hungry already and did not want to wait long I would use the microwave method. I opened up the package and took out a hot dog. Placing it on a paper towel I set the cook time for 20 seconds. It was ready then but very hot. I took out a bun and then spread some mustard, relish and ketchup on it as well. I then placed the hot dog in the bun and eat it all.  It was very tasty and satisfied my hunger. 
Question: How are they making the hot dog?

Answer: They used the microwave.


Question: Carson was trying to work a crossword puzzle and could not solve it; he was frustrated. 
Question: What does Carson need to do before this?

Answer:
make sure he had all the puzzle pieces