Sentence 46: The instructions are rather _____ .The children can hardly understand them.

Explanation: After “to be” is an adjective.
Adjectives with verb roots: When the subject is a thing or event, the sentence describes the nature of the thing or event, we use
adjectives in C_ing form, and if the sentence has a subject who is subject to an external influence leading to a certain property, then
We use adjectives in the form PII
We have: confusing (adj): confusing, confusing, troubling
️ confused (adj): to be confused, to be confused
Here, the subject “the instruction” – the instruction – is the thing, the thing should choose “confusing”.
▪️ embarrassing (adj): embarrassing (due to shyness, embarrassment, or something odd)
▪️ embarrassed (adj): embarrassed (due to shyness, embarrassment, or something weird)
These instructions are quite complicated. Children cannot understand.