--- It’s difficult for the village children to cross the river for school. --- I think a bridge ________ over the river.
The question is __________ easy; all the students can answer it.
Xi Juan is her _______ writer.
The classroom is very _______ because some students are making some _______.
-Do the interesting books belong to________?- No, they are the __________ .
We had fun________ in the swimming pool last Sunday.