It was ______ in the exam that ______ how much time I had wasted.

Tom was about to close the windows_______ his attention was caught by a bird.

The doctor said jokingly that his own infection of the virus _______ the discovery of a vaccine (疫苗)of the disease.

How many pages ______ you ______ so far Can you return the book to me tomorrow

’re in Florence, Italy and see a man on aladder ________ the dust off statues and buildings, don’t worry It’s justAlessandro Ricci ________ material for his famous smog painting