My colleague felt quite happy because his solution was closernow to ______．— Congratulations!

___________she was invited to the ball made her very happy.

______ you’re putting off doesn’t go away; we had better solve the problem right now.

It was only after he had read the papers ________ Mr. Gross realized the task before him was extremely difficult to complete.

If I’m free,I’d like to spend ______holiday in Dunhuang.