People say, “Guilin’s scenery is matchless in the world.” It was not until I visited the place _____ I found it really worthy of the reputation.

Can you make sure ______ the gold ring

My decision _____ to be a good one .

Can you understand me – Sorry, I can ____ understand what you have said .

Are you sure that the news is true-Yes. It be true because the headmaster told me just now.