Мне 20 ну ask the following questions. 1. there are twenty children in our class. (how many children? ) 2. she will start her work tomorrow. (when? ) 3. i am a pupil of the fifth form. (who? ) 4. they opened the window two hours ago. (what? ) 5. my friends are from great britain. (where? ) 6. he will travel to london with his friends. (with whom? )