Every time the class teacher walks past the window, the two boys pretend _________ closely.

______ you’ve got the chance, you might as well make full use of it

Failure is one thing; it counts to find out　　　your faults lie.

Do you know ________ girl over there— Yes. She is ________ exchange student from America.

How will she behave in case of our failure?—-She’ll put the blame on us if it______ badly .