Our English teacher is very strict us and____ his teaching[ ]

The movie star didn’t _________ until the crazy fans had waited for almost two hours.

No sooner ____ down on bed ____the telephone rang

They speak perfect English. How long have they learnt it— ______ they were seven years old.

This article is difficult for me. Could you please explain it to me—I’m afraid I have to say sorry, but the book is _________ my understanding.