---Пожалуйста , помогите!!!!!
Complete the dialogue using prepositions from the box-after-at-by-during-for-in-until-in.
...
Scientist: Well, the company first had the idea (1)____ 1990. We wanted to find a solution to the problem of global warming, and (2)___ March the President offered a prize to the team that came up with the best idea. He gave us six months. (3)_____those six months , my team tried several things. (4)____ first we didnt have many ideas, but then we worked on the idea (5)____ six weeks (6)___ we realized that someone else had built it! (7)___that we decided on the idea of the balloons. (8)___ the end of the fourth month we had a good plan.
.....
We had been waiting (9)__ the Presidents decision and finally (10)____ November 7 we found out we had won.

1.in
2.in
3.during
4.at
5.for
6.until
7.After
8.By
9.for
10.in

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