In class the students put their books_____ their desks. [ ]

It’s said that the famous scientist will give us _________advice on maths study. —__________good news! I’m not good at it.

Jim ________ go to the doctor. His leg is broken.

Look! The light in the room is still on. Mr. Liu at work.

He was lost in the busy streets. But at last it was _______ of him to find the way home.