33. Nowadays, use____of certain waste materials to protect the environment.
—DoyouknowanyoneinParis? —No.I'llmakefriendsonce______.
Don'tgetthatinkonyourshirt,forit______.
Thepupilshere_____allkindsofexerciseseverydayinthepastfewweeks.
He______andwasmadetorepeatit.
Thethief______whenhewasstealingawalletfromawoman.