英语翻译I don't know what they ___ ___ ___in the room.

英语翻译I don't know what they ___ ___ ___in the room. I don't know what was ___ on the playground i don't know ___ to do with the problem ___ they are facing I don't think they know ___(exact)what they're doing. sorry i don,t know what i can do next sorry i don't know ___ I really don't know what ___(say)about it I don’t know what ___ last night. The ink of this pen ___ come out.But I don't know what's the I heard her singing in the next room ___ ___ ___ ___in the n I don't know what the ___(solve) to her trouble is. I don't know ___ Joe found the lost key. I don't know the boy ___ withes shoes.