1、___Examine___the jar and the cardboard,If they are all right ,you can begin
2、How long may I __keep__ the story book?
3、Air is stronger than I __thought___
4、We have _discovered___ that cardboard can hold the water in.
1、___Examine___the jar and the cardboard,If they are all right ,you can begin
2、How long may I __keep__ the story book?
3、Air is stronger than I __thought___
4、We have _discovered___ that cardboard can hold the water in.