儿童数字图书馆:Is the vase on the table just now ?(改错)

Is the vase on the table just now ?(改错) Mike is so short that he can't get the book on the shelf the village is a on the river The picture on the _____ is beautiful. the book is ____ on the floor JACK told his mother the cat knock the vase off the table ,but the truth is he said The house is on offer. what is on the internet? The sea is the vastest on the earth. what the hell is going on!!