Sea water ______ many minerals, salt ______.

You haven’t been to the Water Cube，have you—． How I wish to go there!

With the boy_______ the way, we had no difficulty _______the way to the West Lake.

The old man was the only person on the spot, so the policeman asked him to _____ the facts as he remembered them.

There’s ____ with my computer. It doesn’t work well.