It is surprising that such a young boy can swim ______ the river ______ 100 meters wide.

I don’t know _______read the information on the computer screen.

“The children are playing in the park.”The main structure of the sentence is ______ .

Nowadays there are still a number of students school at various grades due to a lack of money insome poorer areas.[ ]

In which part of the play is it　　　　Lily will play a role?