How long (wait /she)... for us?
How many times (tell/I)... you?
How often (clean/ you) the windows this year?
How many months (take/you) piano lessons?
(stay/you/even) in a castle?

Як довго (чекати / вона) ... для нас?

Скільки разів (скажи / я) ... ти?

Як часто (прибираю / ти) вікна цього року?

Скільки місяців (брати / ти) уроків фортепіано?

(залишитися / ти / навіть) у замку?

Объяснение:

How long has she been waiting for us?

How many times have I told you?

How often have you cleaned the windows this year?

How many months have you been taking piano lessons?

How long have you been staying in a castle?

Слово even здесь не нужно