Why do you keep on [изводить, раздражать] your brother like that?

Hint: The -ing form is required after "keep on".

harassing

In any society, there is a steady pressure to [приводить в порядок] .

conform

Info: "Adjust to" has the same meaning, but needs an object.

Although he was [неграмотным] , he was determined to learn to read.

illiterate

Info: "An illiterate" (as a noun) is also possible.

At least his plan is [осуществимый] .

viable realizable realizable feasible

She was sent to speak to the [директор] .

headmaster headmistress head principal

Info: "Principal" is for AmE.

Numerous ships were lost when they struck on the Great Barrier [Риф] .

Hint: The entire name should be capitalized.

Reef reef