6 A: ________ B: Mr Lee has taught English in Spain ____ fifteen years.

Решение:

В пропуске нужно использовать слово 'for', так как указан временной период (пятнадцать лет).

1. A: How long has Mr Lee taught English in Spain?
2. B: Mr Lee has taught English in Spain for fifteen years.

Ответ: 6. A: How long has Mr Lee taught English in Spain?