Question

the perfect job for your \spare\ time
bowling alleys have been around for more than a hundred years. but before they had automatic pin - setting machines, there were \pinsetters\. in the early 1900s, kids were hired to clear and set up the pins in bowling lanes after the pins were knocked down. despite the demanding workplace, the job wasnt all fun and games. pinsetters earned little money and had to watch out for flying balls.
fill in the blanks to explain the problems with pinsetters’ work.
young pinsetters had a hard job. their ____ was very low. their work was sometimes __. replacing pinsetters with ____ solved the problems.

Explanation:

Para el primer espacio en blanco, basándonos en el texto superior que dice "pinsetters earned little money", la palabra que encaja es "salary" (salario). Para el segundo espacio, el texto menciona "had to watch out for flying balls", así que la palabra es "dangerous" (peligroso). Para el tercer espacio, el texto dice "before they had automatic pin - setting machines. Replacing pinsetters with automatic pin - setting machines solved the problems", por lo que la palabra es "automatic pin - setting machines".

Answer:

Primer espacio: salary
Segundo espacio: dangerous
Tercer espacio: automatic pin - setting machines