In his book Jack, _famous American scientist, described_main process of___human organism.
Nothing could break ___ silence. Suddenly there was___scream, then___second and___third.
Can you plan___experiment?
He came in one morning when we were doing___dialysis in___laboratory of___ university and introduced himself.
___world tour costs ___lot of money.
I don't believe you. I think you're telling ___lie.
Did you have___lovely time in___ Hague’s laboratory?
It was ___ early evening but I was feeling sleepy.
He made___gross mistake.
Don’t worry, we'll finish___experiment before___sunset.
I’d like to have___ salad with___oil for___breakfast.