—It’s difficult for the village children to cross the river to get to school. We think a bridge_______over the river.

It’s difficult for the village children to cross the river to get to school. We think a bridge_______over the river.

— Food problem is becoming a big one in China! —I think the food ________ before going to shops or supermarkets. 

---Why is the classroom so dirty? --- Sorry, sir. It ______ yesterday. We forgot to do it. 

– It’s difficult for the village children to cross the river to get to school.– We think a bridge ________ over the river.