может ли быть дуга вписанной у окружности?

подберите пожалуста однокореные слова к слову василек

Напишите пожалуйста перевод!!! 

1. . Angela went to London last year. Past Indefinite, active voice, singular

2. The students will be taught English next year. - Future Indefinite, passive voice, plural

3.Mike rarely does his morning exercises. Present Indefinite, active voice, singular

4. Nora has been to England recently. Present Perfect active voice singular

5. She is having a rest now. Present Continuous active voice singular

6.Helena had baked a cake before she saw her guests in. Helena had baked - Past Perfect, active voice, singular\ she saw her guests - Past Indefinite, active voice singular

какое выражение является лишним по смыслу?

Домоклов меч, кузькина мать, валаамова ослица, авгиевы конюшни, мамаево побоище, вавилонское столпотворение, дубина страеросовая, верста коломенская