--   do you spell ring?       --________. 

— It’s the classroom! So you ______ know eating is not allowed here.— Oh, sorry.

If people eat natural poisons by mistake, they ________ go to hospital without delay.

---Whose notebook is this? --- It ________ belong to Lucy. Look, her name is in it.

Being examined twice a year, whether it is a car or a bus or a truck, it is the rule that every driver____ obey in this city.