Look! This house is made ___ stone.
His mother is looking at the pictures. How she looks!
—What can we do to bird flu(流感)? —Do not buy or eat ill chickens.
—Do you often watch TV? –Yes, I spend lots of time it, It’s interesting.
“The workers are working on the farm now.” The main structure of the sentence is .
There are birds living in this area, because there is space for them.