Adjectives - work

Which adjective means “requiring a lot of effort, time, or energy”?

Which adjective describes a job with “no prospects of progress or promotion”?

Which adjective means “very boring, tiring, and making you impatient”?

Which adjective means “very important, influential, and with a lot of responsibility”?

Which adjective means “making you feel enthusiastic and eager to do something”?

Which adjective means “very repetitive and boring; always the same”?

Which adjective means “doing the same action again and again”?

Which adjective means “giving satisfaction because it is useful or important”?

Which adjective means “testing your abilities in a way that is interesting and difficult”?