The workers ___ busily when the boss came to look for something she ___ in the office

Did you ask the guard _______ happened? — Yes, he told me all _______ he knew.

It was ________ fun to play on the beach that itattracted countless children

_______ one and a half months enough for the project to be finished?— I am afraid not. The professor is ill and only after he recovers ________ go on with it.[ ]

I’m Frank. _ -Nice to meet you, too.