10 form. Participles

We listened to the girls (sing) Russian folk songs

We listened to the Russian folk songs (sing) by the girls.

The girl (wash) the floor is my sister.

The floor (wash) by Helen looked very clean.

Who is that boy (do) his homework at that table?

The exercises (do) by the pupils were easy. 

(to read) the story, she closed the book and put it on the shelf.

(to buy) some juice and cakes, we went home. 

(to do) his homework, he went for a walk.

(to sell) all the fruit, he went to see his friends. 

(to drink) tea, she scalded her lips.

Yesterday we were at a conference (organize) by the pupils of the 10th form.