—Johnson, there’re a lot of chairs over there. Go and fetch ________ for me. —Why ________ ? Mike is sitting there doing nothing. 

 I found _____ impossible to keep silent about what had happened to me.

---- Why is the cake so expensive?---- Maybe you don’t know a cake made of wheat costs less than _____ made of rice. 

To save class time, our teacher has ________ students do half of the exercise in class and complete the other half for homework.

---What do you think of these two books?---_________ of them are interesting. And I’ve read them several times.