Waste paper shouldn’t _____ everywhere. It’s our duty to keep our classroom clean. A. be thrown B. throw C. is thrown
My mother always has__________ housework to do on weekends.
It’s important ______us to learn English well.
Liu Lei is ________better at Chinese than Liu Ying.
Eating more vegetables ______good for your health.
Lucy ________comes to school on time. She _______ comes late.