Scrabble game

Can you please check my answer? Thanks in advance.

Scrabble is the world's most popular game. For its origins, we have to go back to the 1930s in the USA, when Alfred Butts, an architect, found himself out of (16) ............... He decided that there was a

(17) ................ for a board game based on words and (18) .............. to design one.

Eventually he made a (19) ................ from it, in spite of the fact that his original (20) .....................

was only three cents a game

(16) a. earning b. work c. income d. job

(17) a. market b. purchase c. commerce d. sale

(18) a. took up b. set out c. made for d. got round

(19) a. wealth b. fund c. cash d. fortune

(20) a. receipt b. benefit c. profit d. allowance