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

The two girls are so alike that strangers find_____ difficult to tell one from the other.

Tom’s mother kept telling him that he should work harder, but ＿＿＿didn’t help. 

—Which share is meant for me?—You can take ________ half. They’re exactly the same. 

 —Have you finished your work yet?—No, I’ll finish it in ________ fifteen minutes.