She had great difficulty ________ the suitable food on the menu in that restaurant.

       our duty        some housework at home

Mr. Lee told us an interesting story yesterday. It made all of us_______ .

-- Shirley, what were you doing at three o’clock yesterday? -- I was sitting by the window, __________ to the music.

 My uncle’s dog was in the garden. I saw it _______ under the tree.